The federal and Quebec governments where struggling with the Front de Liberation du Quebec (FLQ). The had kidnapped British Trade Commissioner James Cross on October 5. They held him for a ransom of $500,000 and demanded that the CBC broadcast the FLQ manifesto.
Then they abducted Quebec Labour Minister Pierre Laporte on October 10; his body was discovered eight days later.
At one point, from the steps of parliament, the press asked him about the extreme implementation of the War Measures Act, Prime Minister Pierre Trudeau replied, “Just watch me.” That statement would forever become a part of Trudeau’s legacy.
Eventually, a deal was made, and the kidnappers were allowed to go to Cuba. Those responsible for the murder of Laporte were caught and sent to trial.
For more on the FLQ, Wikipedia
Also I suggest going to the CBC site for even more.