“Gunned down”. No. “Gunned down” is being shot down for no reason. He was a criminal who was shot and killed by an innocent law-abiding citizen minding his own business until preyed upon by a violent perp.
That was offsides, wasn't it? His voluntary crime spree happened to be stopped by someone with a firearm, and nobody from from Humboldt Park to the Navy Pier has to worry about 'DaOne Nonsense' thugging them 'Nomore.'