Call the police and tell them someone is living in an RV on the public street.

We had a tenant years ago burn down a townhouse because of smoking in the backyard, police never could prove that the tenant did it, they skipped town like a ghost when the cops started asking questions.. 

The intraweb police is coming to gets ya!!!!!

(Thieves are stupid) They gave me my money back almost immediately after police report filed.

I truly appreciate what fire/EMS/police provide for my/our community.I think you answered some of your own questions.

Lastly, I have even called local police departments and asked questions about particular neighborhoods.

v=HzYf7n9cU0g ) and there was a police shooting at Bragg and East earlier this year.

The police have been called multiple times by other neighbors (not my tenants).

Neighborhoodscout is good, but also the Milwaukee Police department has a crime map and lots of statistics on their website.

Less than 2 days later I received a phone call saying that the police gave them a ticket for parking over night on the street (not allowed in our neighborhood between 3-6am without permission from the police department - which I had told them).