ONE Good Guy/Gal/Yet To Decide with a NUG would have ended that Yahoos day, with justified dispatch.
Where were the CCW folks?
Printing in a bar in Maine is a crime as is being judged intoxicated by a cop. Both locations had bars. It’s possible there was no-one carrying.
The other factor may be an unwillingness to protect the crowd. When I lived in Albuquerque I decided well ahead of time my firearms would only be used to protect me and mine. No way I put myself at the mercy of a leftist prosecutor for a crowd that votes 60/40 for more crime.