There has been tons of use for it for hate, but people have found a way to use every method of communication for hate (e.g. TV, Mail, phones) and efforts to crack down on hate on Facebook haven’t seemed to have an effect on hate in the real world (see the people banned from Facebook who went on to use other platforms to coordinate 1/6). I don’t like their privacy intrusions but people seem to have a tendency to blame all of society’s ills on Facebook, phones, and the internet and that in and of itself is a massive oversimplification that doesn’t reflect the real issues with our society