I think an important detail has been left out of this discussion regarding the 4th amendment...none of the people who were detained/searched/locked down/or scared by riot gear were in a position to be incriminated. As matter of fact, the 4th amendment was exactly what was protecting them the whole time.
If the police think there is a terror suspect in your house and they sit you down in your front yard with your hands on your head to keep you (and them) safe, it's perfectly legal. Until they prove the guy's not there, you are a suspect...everybody is a suspect in a case like that. All the 4th amendment guarantees is that if they find 60 pounds of weed, a kilo of coke, and a meth lab in your kitchen they can't prosecute you for it because that evidence wasn't properly obtained.
No ones rights have been violated...let's get the common sense fairy back over hear and tone down the radical talk.