Well, apparently they attack kids. I don't know what your parental mindset is, but that would bother me.
Did you read the article?
There squirrels weren't attacking anyone, until AFTER the city was trying to starve them to death, by locking the trashcans, having extra park patrol and warning people ( and for all we know threaten them with fines) to NOT feed the squirrels.
All the squirrel was trying to do is get the muffin. The people responsible for the squirrel attack is the city.