Every ISP is now legally liable for every posting made by their users. Including the White House ISP Trump uses to tweet from. So anything abusive, insulting, threatening, etc - they are legally liable for it. They are no longer common carriers like phone companies. If they transmit pornography to a minor, they are legally liable for it, not the site which hosts it. The loss of common carrier status can, and absolutely should, bring these companies to their knees.

Bust out the class action lawsuits.