> Some forty Detroit police officers dressed in commando gear ordered the gallery attendees to line up on their knees, then took their car keys and confiscated their vehicles...(More than forty cars were seized, and owners paid around a thousand dollars each to get them back.)

So the people were not arrested, or charged with crimes, yet their personal property was confiscated by the Police.

Can a Police officer walk up to me on the street and take my wallet and keys? I don't think so, so why can they do it here?

In all seriousness, it's shocking and scary the Police can do whatever the hell they want to.