Proper reflection of all the facts should reveal that a great deal of wrongdoing has been done by both Israelis and Palestinians over the past century. Not sure how someone could miss that without very biased news consumption.
Regardless, if you begin to use the same tactics as your enemy, you become as bad as your enemy. Not better, not worse, just … as bad. You have to take different kinds of actions from your enemy if you wish to be a different kind of person than them.