Seems very coincidental that he started some twitter beef with Greta Thunberg right before he was arrested.
Wouldn't be surprised if he got tipped off that GRETA (The Group of Experts on Action against Trafficking in Human Beings) were building a case against him, then being the weapons-grade moron that he is, assumed they meant Greta Thunberg.
Apparently the head mod of /r/Tumblr has already been forcibly demodded. A bit weird that Tumblr of all places has been the starting point.