The snow plowers destroyed my property -__-.?

Heh. He didn't hit it. He blasted it with "snow pressure" off the plow head and the 4x4 the hoop was mounted on just couldn't take it. You can try to take on city hall, I wish you a bundle of luck. File suit. That's gonna cost you 70 bucks right off the bat. Cheaper to buy a new 4x4 of pressure treated lumber.