It's a shame, but there are some unscrupulous criminals out there who will impersonate police. So the question came up today, what happens if an unmarked police car stops you and you're not entirely sure if it's a real policeman behind the wheel? There are a few things you can do to protect yourself.
John Futrell walked into a Louisiana sheriff's office with guns and knives on Monday. Futrell started firing in the office, injuring two officers.