How to make Canada safer from future attacks:

On the one hand, we could make it illegal to access salafist websites, prosecute imams who counsel terrorism and ensure that no one can take up residence in the country except after a thorough security check which takes months.

On the other hand, we could permit anyone who arrives at an unauthorized border entry point to enter the country with only the most perfunctory of checks (shhh no one tell Daesh!) and burble on ad nauseam about solidarity and diversity being our strength.

Clearly the second alternative stands to make us safer!