Wikipedia is hardly a reliable source, and even if it was I could just as easily tell you to look at this [url=http://en.wikipedia.org/wiki/List_of_fictional_antiheroes]Wikipedia list[/url] where, at the very tippy-top of the comic book anti-hero section sits Batman. You don't have to kill to be an anti-hero. An anti-hero can still be considered a hero by his peers. Regardless, there are many in the DC verse who consider Batman a menace, be they hero, civilian or villain. The fact some people consider him a hero is not only subjective, it is also runs tangent to the point you are trying to make. It doesn't matter if someone considers you a hero, that doesn't have any effect on what you are. What about an inherently evil character who is considered good, does people's opinion of his make him good?