I once participated in a community cleanup project where a group of us went to a park armed with trash bags, shovels, rakes, brooms and gloves.  We spent hours raking, sweeping, picking up trash, and pulling weeds.

We came across shopping carts, scattered piles of dirty / ripped up clothes, cardboard, and other strange odds and ends.  We found it a little odd to find so many personal items in one place, but shrugged it off.

It wasn't until we came across an aged sleeping bag, that we realized we were throwing away someone's only home.

I must go to a WRC tournament one of these days.  Who wants in?