Even if it’s just a recommendation on a different group in which to ask the question, I’m curious how Lemmy combats criminal activity and content like human trafficking, smuggling, terrorism, etc?

Is it just a matter of each node bans users when they identify a crime, and/or problematic nodes are defederated if they tolerate it?

And if defederated, does that mean each node has to individually choose to defederate from the one allowing criminal activity?