Yep. Your feelings. On full display. You're rationalizing Isreal killing civilians and demonizing the other side. My point is clear and undeniable. It doesn't need a long a rationalization. Killing civilians is wrong regardless of what side does it. NEITHER side has a just reason for doing so. You're just picking one.
As you acknowledge, this is a longstanding feud that you don't even fully understand. Both sides have been performing atrocities against each other for ages. It doesn't justify the continued massacre of civilians by either side. That's it, or should be, but you're going to rationalize killing innocent people because these civilians are less worthy than these civilians.