While Hamas is oppressing the Palestinians who oppose it's rule it is not the one who killed at least 50k of them. They the one who is currently attacking the occupation force.

Hamas can't destroy Israel even if they want to and with a Palestinians state with it's own army it could exterminate Hamas if it refuse to drop arms.

You won't stop the oppressed retaliating with the most atrocious actions if the occupation don't end first. This is basic logic. Would you have said both slaves and slaves owners need to stop violence in the same time after Nate Turner revolt where he killed some kids or you would simply has say slavery should be abolish first?