This is a sum of: 1. hamas's number one survival strategy to hide between and disguise to civilians. 2. The huge amount of terror targets (10,000s) to attack what makes it impossible to think every time how to not hurt civilians even if you really want not to. 3. Israel's patience that over after cornered in such an extreme way physically and also psychologically in a way people here I think highly underestimate and miss out, what makes her to behave looser.