The only way to convince you this is wrong is if you get swatted and have your dog killed for barking too much in front of you while cuffed.
I've been in a similar situation where some agents from the anti terrorism brigade came to my door. Sometimes you just have to shut up and work with them how they see fit.
Nobody was body-slammed, nobody was disrespected, nobody was being held longer than necessary or with excessive force.
This isn't a situation to turn into hate towards the police. Just get over it and don't be a fucking asshole.
