Israel repeatedly accuses Hamas of using such sites as bases for rocket attacks. They claim that Hamas does this precisely to encourage posts like yours: blaming Israel for Hamas' violations of international law.

I cannot validate Israel's accusations, nor can I refute them. I just think it's important to mention them, because if they were true, it changes the interpretation of those facts considerably.

Unfortunately, confirmation of such things is practically impossible, in a self-fulfilling way. At least one side is willing to go to great lengths to deny their own violations. It's entirely possible that it's both.