The one time the cops raided my place in Chicago, they turned out to be on my side. They failed to get the lab reports on the small amount of ditch weed I had. They took my guns, but I got them back since they were all legally registered. ;)
I got my guns back too and was supposed to wait for a Sheriff's Deputy to escort me off the courthouse premises. He was a no show and the cop in the properties room asked if I would go right home. I said, "There was no other place to go." So, he let me walk out with the pistols in a paper sack. ;)