Yeah, that's fair. Sometimes the mob comes for something you said on the internet. And sometimes they come for you for something you did in a viral video. Two separate issues that I don't intend to confuse. (But oftentimes the end result and the solutions are similar.)
The bicyclist in the example wasn't trying to persuade anyone on Twitter of anything. It was the public authority figures who misdirected the crowd's attention to him by releasing inaccurate information about when a (real) crime had occurred.