In this wingdings defense overall, he HAS saved people from assault, rescued kittens, etc. Obviously that doesn't excuse him from his actions on this particular case. Furthermore, you and I may not approve of his antics or methods but it's not up to us. Its the city's problem, not anyone else's.
Besides, he looks like spawn! How cool is that?
(No, I don't approve, don't condone, nor think its a sane idea. He's going to get himself killed by a real villain and it will be nobody's fault but his and the criminal. I bet he has a ccw badge and tacticool wheelbarrow.)