There are still no videos of that rave next to the military base that is right next to the concentration camp. Hamas people had their own GoPros and Israel has lots of cameras everywhere. My guess is they aren't releasing anything because Israel killed the vast majority of the civilians there. But Israel's strategy works, each new lie (like 40 beheaded babies, we didn't bomb that hospital that one time etc.) spreads through the Western political system and the media, is used to justify war crimes and then gets quietly retracted weeks later.