You have no idea how many times I have fantasized about doing this.
Seriously, though, go to the police station and talk to the person of highest rank. They might be sympathetic, and give you step by step instructions.
People need to start a neighbor to neighbor grapevine to get control over their neighborhoods. Neighbors would talk to their friends and families offering to let them know when there is an apartment or house for rent or sale. These neighbors could also get in touch with landlords and realtors offering to help them find good renters or home owners. This can all be done by phone from your own home. Great way for retirees to do something in their spare time.