As far as I know, nothing at all whatsoever. There's been no claim I've seen, no indication of any charges. I'm pretty sure they're taking people on Parler going "If you're going to the rally, bring walkie talkies because the Internet will be jammed, and bring food because they shut down restaurants!!!" as "They organized on there"

That's why this shutdown is so huge. Well, one of a number of reasons obviously.