some of the 50 "trump rally quieters" were involved in starting a brawl
Linwood's reason for being in Minnesota is perfect: he's gone off to college there nearby.
http://dailyentertainmentnews.com/breaking-news/linwood-michael-kaine-sen-tim-kaines-son/
"As for Linwood Michael Kaine, he studied at Carleton College, a private liberal arts college in Minnesota. Woody runs his own blog and based on it, the young man shows an interest in the arts, specifically in film."
Unless he's a law student he likely wouldn't be aware of the subtle differences between "allowed protesting", "viewers of protests", and ultimately the courtroom principles of "structured debating rules".