Yes, terrorists do do those things. But some collateral damage is one thing. All the possible collateral damage is genocide. If Netanyahu tries to drive all the Palestinians away, he has become as bad as what the Jewish people fled.
Just because some bad people are doing bad things does not give you an excuse to drop bombs on everyone. That is no good.
You do not want to become just as bad as what you hate, doing whatever it takes. Or you become them. A good person must try harder.