If the London attacks served as a wakeup call for Canada, perhaps some good came out of it.
The RCMP is tracking several potential terror cells in Canada. Two Canadian cities are vulnerable to a London style attack ... Toronto and Montreal. Of the two cities, Toronto is the more likely target.
I see the London attacks attract some kind of attention, sympathy, and pledge to fight the terrorists 9/11 in the US never attracted on the part of Canadians, conservative, moderate, and left-leaning.
Deep down the hearts, Britain is still regarded as Canada's Mother Country. When Mother Britain is attacked, Canadians who are never moved by attacks on the rebellious-elder-brother-who-left-home-and-striked-rich aka the United States will become emotionally involved.