I parted company with Mr. Raub when he said 9/11 was an inside job. I agreed with most of what he said and nothing he said justified his detainment (if it wasn’t an arrest). More extreme postings occur almost daily on FR.
In some ways, being arrested is a lesser offense than being put in a mental institution. There was a study a while back, IIRC, done about sane people labelled crazy- the doctors and nurses saw the person as crazy, and found evidence, even though he wasn’t.