If you want to create an analogy, I think chans are more like user
group meetings that happen in public spaces (e.g. a public park). Nobody
would kick members out of the park because they heard that they're
pro-ISIS (that's just their opinion). However, display of illegal
content or illegal actions would get members removed via someone calling
the cops. Off topic comments that detract from the spirit of the group
could also get members suspended or kicked out of the group
permanently.
Is it up to park police to monitor the user groups? Sure, but they
cannot take action unless it violates the law.
Is it up to park police to monitor the user groups? Sure, but they cannot take action unless it violates the law.