Nice delusion. The police had a warrant. The very thing that the Constitution requires.
Why do you hate the Constitution?
Oh wait, you want to read the Constitution to fit your worldview without amending it.
What does that make you?
The whole event was because the cops were serving a search warrant as part of a home invasion probe at the home of the marine under investigation for being the muscle for that home invasion gang.
Tucson Police say a gun found in Guerenas house had been stolen in a burglary at a home in the 4300 Block of East Holmes three years ago.
http://www.tucsonnewsnow.com/story/14964867/stolen-gun-found-in-dead-mans-home