Not sure of the 20 hospitals, but here’s the wire service article about the school being bombed this week.

https://www.reuters.com/world/middle-east/least-6-people-killed-israeli-air-strike-unrwa-school-gaza-2023-10-17/

Far-right instances Gab and TruthSocial are also technically mastodon. By this metric mastodon also has a nazi problem.

Any software that allows people to communicate over the internet will be used by horrible people to do horrible things.