@char Germany for example has the NetzDG law which mandates the removal of hate speech among other things with big penalties if you don't react within 24 hours. On the other hand, it only applies to social networks with 2 million or more users. The law never considered federation however, so who wants to be the first prime case in court with the opposing side arguing total reach instead of local users? There's also copyright law (DMCA etc.) that opens you up for liability.