Any decent person ought to feel deeply abashed to have to "copsplain" such stupidity to anyone - especially other adults.
If they even bother justifying it to themselves, it's almost certainly something along the lines of "but it's the law".
And if you dare to criticize the "just doing my job"/"just following orders" attitude implicit in such justifications ... well, I'm sure that now counts as a "hate crime", too.
"When law and morality contradict each other, the citizen is faced with the cruel alternative of either losing his moral sense, or of losing his respect for the law." -- Frédéric Bastiat, The Law
Apparently, this Youtube couple had an online feud with some other Youtuber. They ran into him on the Vegas Strip, and the couple thought it would be a good idea to set-up a camera to capture the ensuing drama...