I wouldn't go so far as to say that they should not respond, however, they should respond in a manner that is equal to the damage done to them during an attack on them.
So you don't think they should respond. Given what I've read of yours in the few posts you've posted since you've been here? It's clear you're just another genius who thinks that Israel shouldn't exist.
Concentration camp? RAFLMAO! You've never been to the gaza or seen a concentration camp, so you might want to reconsider your absurd rhetoric instead of spouting pro-terrorist propaganda.
Oh... and I have a better idea. Israel should respond in a way that makes the terrorists incapable of sending any more missiles into Israel.
How 'bout that?