Security in one word
Condemnations are not nearly enough and are about as effective in stopping these attacks as "condemning" Hitler's blitzkrieg would have been in the 1940's. The real problem is Jewish communities relying on the government to keep them safe. It is not the government's job to protect us, it's our responsibility to protect ourselves. Jews in North America need to get armed and trained and actively defend our communities against terror, rather than waiting for the police to arrive hours after the fact. Only through strength will we be safe and secure.