I like how you take only half of that sentence. If u read thoe whole thing, I said, "notice how you never heard of terroists in canada UNTIL AFTER HARPER BECAME PM IN CANADA AND STARTED BACKING HAWKISH AMBITIONS". See how different that staement is. Name one incident of terrorist cells being found in canada BEFORE Harper was Prime Minister. The operative phrase there being "BEFORE Harper was Prime Minister".
tl;dr Failed strawman arguement is fail