Why the Anger, PLO?

So, the Gaza supporters are mad that the "Juice" are fighting back. They express this anger in a typical manner, cowardly attacks on civilians across the free world. This is pretty consistent with past Muslim protests. However, this time around, the protests seem to be a bit more widespread, although no less violent.

Now remember, Hamas openly declared an end to the cease fire, not Israel. Hamas launched some of the first attacks by firing rockets into Israel. Israel simply responded in a manner consistent with a nation trying to defend itself from a violent aggressor. Israel decided not to be cowed and have focused their attacks on Hamas.

Seems to me if someone openly states, "We're going to fight you now," they really have no reason to decry violence if the enemy fights back.