As for your specific statements, I find it hard to reconcile your claim that owners "...were warned repeatedly by local law enforcement and an intervention of local hotel owners; specific measures were suggested to minimize the problems at this place and weren't taken..." with the article's claim that sworn testimony by local law enforcement that, "the Tewksbury Police testified they never communicated with Caswell about what he could do to reduce drug crimes."
But be that as it may, if you care about civil liberties it is a fact that you'll mostly wind up defending unpopular actions by unpopular people who are unpopular for a reason. Because that is mostly who prosecutors are going to throw the book at, and go out of their way to target with every tool, ethical or not, that they can.