My wife recently noticed a bike hidden in the bushes by our house. It was just a kids size Walmart bike, but I was sure it belonged to someone in the hood.
I pulled it out and locked it to a tree, hoping someone would see it and take it back home. After five days I called the police to come and get it. When the cops show up, they walk uninvited in to my garage and start questioning me about my four bikes. At that point I reminded them that I called to have the lost bike picked up, not to discuss the contents of my garage.
The cop then asked my name, address, and phone number, to which I complied. He then asked my birth date and social security number. I refused to give him that information and told him that I didn't feel that asking me that was appropriate for the situation. He then proceeds to get on his radio and run the license number on my truck. At that point another police car rolls up, and I now have three police officers giving me this "guilty till proven innocent" look.
Now I am mad, so I tell the police we were "done", and I walked back in the garage and closed the door. Sure doesn't make me want to get "involved" in the future.