tom nardone with a simple mission of doing what they can to keep the parks maintained.here? >> we're the detroit mower gang. we clean up the abandoned parks and playgrounds. >> why would you do that? >> kids need a place to play. if you're under ten years old, you deserve some justice in this world, don't you think? >> yeah. >> yeah. >> how did this thing start? >> i guess i started it. i bought a lawn tractor when the city announced closing 72 parks. >> they're going to stop maintaining it or physically shut it up? >> they don't physically shut it up. because there's no money here. they just take the trash barrels away and stop mowing. >> crazy. >> it's a strange place, detroit. when we're done here, it will not look like a nice park. >> but still a playable park. >> and a visible park. so if you had kids, you could see what they're doing in this park. it's safer. >> all right. well, let's cut some grass. >> come on, you'll like it. it's fun. ♪ >> there's grass in my beer. >>> in detroit approximately 40 square miles have been reverted to basically unused green space.