Banned terrorist organizations
The Canadian government has banned more than 50 terrorist organizations. These include Al Qaeda, the Armed Islamic Group, Euskadi Ta Askatasuna (ETA), Liberation Tigers of Tamil Eelam (LTTE), the International Sikh Youth Federation, the Palestine Liberation Front, the Popular Front for the Liberation of Palestine, the Popular Front for the Liberation of Palestine-General Command, Hamas, Palestinian Islamic Jihad, Hezbollah, Kahane Chai, the Taliban, and Mujahedin e-Khalq.
In 2006, Minister of Public Safety Stockwell Day expanded the federal ban of Hezbollah from the purely militant wing to all 16 sub-organizations, and declared the Liberation Tigers of Tamil Eelam a terrorist group.
Relating to Cuba
- September 22, 1966 - A bazooka attack on the Cuban embassy in Ottawa, Ontario is made.
- October 5, 1966 - Anti-Castro forces bomb the offices of the Cuban trade delegation in Ottawa.
- May 31, 1967: A small bomb explodes at the Cuba Pavilion at Expo 67 in Montreal. The attack is attributed to Cuban Nationalist Action.
- October 15, 1967: A bomb explodes at the offices of the native trade delegation in Montreal, Quebec.
- May 29, 1969: A bomb is placed in the doorway of the Cuban consulate in Montreal, it fails to go off.
- July 12, 1971: A small bomb goes off at the offices of the native trade delegation in Montreal, Quebec.
- April 4, 1972: Cuban official Sergio Pérez Castillo is killed by an explosion at the Cuban consulate in Montreal, Quebec.
- January 21, 1974: A bomb explodes at the Cuban embassy in Ottawa. It is attributed to Orlando Bosch.
- September 22, 1976: An explosive device is thrown from a car at the Cuban consulate in Montreal.
- January 14, 1980: A large explosion significantly damages the Cuban consulate in Montreal.
Relating to militant Sikh aspirations for Khalistan
- October 21, 1914 Canadian Immigration Branch official William Hopkinson, also serving as a police agent from Calcutta, was assassinated inside the provincial courthouse on Vancouver's West Georgia Street by Mewa Singh, a Sikh extremist who had been arrested in mid-July for attempting to smuggle weapons into Canada. On August 31 and September 3, two of Hopkinson's informants had been murdered in Vancouver.
- June 23, 1985 - Both the 1985 Narita International Airport bombing and the Air India flight 182 explosion are believed to have been carried out by Sikh extremists living in Canada.
- May 26, 1986 - An attempt is made in Vancouver, British Columbia to assassinate Malkiat Singh Sidhu, a cabinet minister in the Indian province of Punjab.
- August 28, 1988 - Indo-Canadian Times editor Tara Singh Hayer is shot and partially paralyzed, probably due to his statements connected to the Flight 182 investigation.
- November 18, 1998 - Hayer is assassinated.
Related to Armenian-Turkish relationships
- October 1864 - Agents of the Confederate Secret Service based in Montreal host a visit by John Wilkes Booth, the future assassin of US President Abraham Lincoln. Historians discuss the potential for a conspiracy to have partially formed during his time in Montreal. After police shot Booth, they found a money order for $184,000 drawn from the Montreal Branch of the Ontario Bank.
- April 7, 1868 - Thomas D'Arcy McGee is assassinated in Ottawa, Ontario by an alleged Irish nationalist or Fenian rebel sympathizer named Patrick Whelan.
- November 25, 1965 - Croatian nationalists bomb the Yugoslavian consulate in Toronto, Ontario.
- January 29, 1967 - The Yugoslavian embassy in Ottawa and the consulate in Toronto, Ontario are among six Yugoslavian offices bombed in North America.
- September 3, 1984 - Montreal, Quebec's Central Station is bombed, killing 3 people and wounding more than 30. Thomas Bernard Brigham, an elderly retired American armed forces officer, claims to have been protesting Pope John Paul II's visit to Canada.
- April 9, 1989 - Charles Yacoub hijacks a bus and drives it to Parliament Hill to protest the Syrian invasion of Lebanon.
- October 2008 to July 2009 - Dawson Creek, British Columbia, Six natural gas pipelines owned by Encana Corp. were bombed after letters were sent to a local newspaper opposing the gas industry.
- December 14, 1999 - Ahmed Ressam, known as the Millenium Bomber, was arrested upon entering the United States by a ferry from Victoria, British Columbia. He was smuggling explosives in his car from Canada as part of a plot to bomb the Los Angeles International Airport (LAX) on New Year's Eve 1999, as part of the foiled 2000 millennium attack plots.
- 2006 - In the 2006 Ontario terrorism plot, Canadian counter-terrorism forces arrested 18 terrorists (dubbed the "Toronto 18") inspired by al-Qaeda. They were accused of planning to detonate truck bombs, to open fire in a crowded area, and to storm the Canadian Broadcasting Centre, the Canadian Parliament building, the Canadian Security Intelligence Service (CSIS) headquarters, and the parliamentary Peace Tower, to take hostages and to behead the Prime Minister and other leaders.
- August 2010 - Misbahuddin Ahmed of Ottawa was arrested (later convicted in July 2014) of knowingly facilitating a terrorist activity and participation in the activities of a terrorist group.
- 2013 - The head of Canada’s spy service Richard Fadden has told Parliament that the fragmenting of al-Qaeda has made him more “worried” about terrorist attacks in Canada. He warned that Canadians are involved in every al-Qaeda affiliate group and that these groups have mentioned Canada as a possible target.
- 2013 - Chiheb Esseghaier and Raed Jaser of Montreal and Toronto, respectively, charged as part of an alleged Al Qaeda plot to derail a New York to Toronto train on the Canadian side of the border. Alleged plot was not imminent. Canadian Muslims helped to foil the alleged plot. The suspects said they were arrested based on their appearance.
- July 1, 2013 - Canada Day participants at the British Columbia Provincial Legislature Buildings were targets of an alleged plot by Surrey residents John Stewart Nuttall, 38, and Amanda Korody, 29, to plant pressure-cooker bombs as inspired by al-Qaida. Investigation by RCMP and CSIS prevented implementation of the plot.
- October 20, 2014 – On October 20, 2014, two Canadian Forces members were hit by Martin Couture-Rouleau, a recent Muslim convert in what is known as the 2014 Saint-Jean-sur-Richelieu ramming attack. Warrant officer Patrice Vincent died of his injuries. Couture-Rouleau was eventually gunned down and killed.
- October 22, 2014 – On the morning of October 22, 2014 at 9:52am, Michael Zehaf-Bibeau, a 32 year old drug addict and self-convert to Islam, who was known to Canadian authorities, shot and killed Cpl. Nathan Cirillo while the 24 year old stood guard at the War Memorial in Ottawa, Ontario. In the aftermath of the attack, there was much speculation about whether the attack was an act of terrorism related to Canada’s recent joining in the armed coalition against ISIS, or  a criminal act of a mentally-deranged loner. Canadians are sharply split between those who say it was an act of terrorism or a result of the shooter's mental health issues arising from the lack of mental health access in the country.
Quebec nationalism (and anti-nationalism)
- 1963-1969 - Front de libération du Québec (FLQ) starts a bombing campaign at the average rate of one every ten days. Targets included English owned businesses, banks, McGill University and the homes of prominent English speakers.
- 1963 FLQ bombing of Canadian Army Recruiting Centre in Montreal, killing Sgt. Wilfred V. O'Neil.
- late 1960s - FLQ places a bomb in a window well of the National Defence Headquarters on Lisgar St in Ottawa, Ontario. The explosion killed a cleaning lady.
- late 1960s - FLQ places a bomb in a mailbox next to the Canadian Tire store on Wellington St in Ottawa, Ontario.
- February 13, 1969 - FLQ sets off a powerful bomb that rips through the Montreal Stock Exchange causing massive destruction and seriously injuring 27 people.
- February 22, 1969 - FLQ terrorist bomb explodes at Liberal Party social club in Montreal, injuring two people.
- October 5, 1970 - British diplomat James Cross and (on October 10) Quebec Minister of Labour Pierre Laporte are kidnapped by the FLQ in Montreal. (The dead body of Pierre Laporte was discovered in the trunk of a car in Montreal, Quebec on October 17, 1970, and the murderers were arrested on December 26, 1970; Cross was released on December 3, 1970.)
- May 8, 1984 - Soldier Denis Lortie, a federalist, enters National Assembly with the intent of killing René Lévesque and the deputies of the Parti Québécois. Due to a great amount of chance, he came in too early and killed 0 deputies (but still killed 3 other people and wounded 13). Unarmed employee René Jalbert negotiated with Lortie for several hours and convinced him to give up his gun and get arrested. Jalbert got decorated the next week.
- 2000 - The Brigade d'autodéfense du français bombs a church where an English fundraiser was to be held.
- 2001 - Quebec - The FLQ/The Brigade d'autodéfense du français firebombs three "Second Cup" locations in Montreal. They were targeted because of the company's use of its incorporated English name "Second Cup". Rhéal Mathieu, a previously convicted FLQ terrorist was convicted for all three bombings. Seven McDonald's restaurants were also firebombed.
- September 4, 2012 - The night of the Quebec provincial elections, Richard Bain, an anglophone Quebecer attempted to assassinate Parti Québécois leader and Premier elect Pauline Marois at a victory gathering in Montreal. He also set fire to the Metropolis concert hall where the event was being held. A man was killed and another was injured in the terrorist act. It is said that Bain's ultimate goal was to kill Marois following the Parti Québécois victory. Bain was arrested shortly after the attack, is currently incarcerated and was undergoing trial in 2014.
Sons of Freedom
- 1920s - Arson and bombing by Freedomites (also called Svobodniki or the Sons of Freedom), targeted property of other Doukhobors and government buildings such as schools to exhibit their dislike of materialism, and government pressure to school Svobodnik children
- 1924 - Peter Verigin was killed, aged 65, in a still-unsolved Canadian Pacific Railway train explosion on October 29, 1924 on the Kettle Valley Railway (now known locally as the Columbia and Western Railway) line near Farron, between Castlegar and Grand Forks, which also killed his 17 year-old female companion Marie Strelaeff, member of the provincial legislature John McKie, P.J Campbell, Hakim Singh, Harry J. Bishop, W. J. Armstrong, and Neil E. Armstrong. The government initially (during investigation) had stated the crime was perpetrated by people within the Doukhobor community, while the Doukhobors suspected Canadian government involvement. To date, it is still unknown who was responsible for the bombing.
- 1960s - Additional arson and bombings, mostly conducted in the nude, included the bombing of a railway bridge in Nelson, British Columbia in 1961
- January 29, 1965 - Two U.S. jets (F-84s) being overhauled by Northwest Industries in Edmonton, Alberta were destroyed and a third damaged when a left-wing group protesting the Vietnam War dynamited the planes; a security guard was killed during the incident. See also Edmonton aircraft bombing.
- July 8, 1965 - A bomb destroyed Canadian Pacific Air Lines Flight 21 flying from Vancouver to Whitehorse, Yukon killing all 52 people on board. Source of the bomb was never discovered.
- May 18, 1966 - Paul Joseph Chartier's attempt to bomb the House of Commons fails when the device goes off prematurely in a Centre Block washroom.
- April 20, 1995 - Roger Charles Bell places a bomb outside Province House, the Prince Edward Island legislature, injuring one.
- October 2001 - Shortly after anthrax letters were found in the US, Office of British Columbia Premier Gordon Campbell received letter with white dust that was part of Anthrax hoaxes.
- March 5, 2015 - While new anti-terrorism law was under consideration and months before federal election, four Conservative Party Members of Parliament (Denis Lebel, Steven Blaney, Christian Paradis and Maxime Bernier) received letters with white powder (Anthrax hoaxes) and message "Conservateurs, vous serez anéantis," which translates to "Conservatives, you will be annihilated" at their constituency offices in Quebec.
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