Civility, which facilitates cooperation, is imperative if anarchy is to really work. Pigheaded and self-important aggressiveness, hypercriticism and easy intolerance is a recipe for the status quo. Once you get beyond the labels, there are still unfortunately plenty of folks that it makes sense to despise. Nor is anyone as morally pure as some of our new puritan idealists would insist that they be. A person is the sum of their character traits, not a distillation of the most pronounced ones.
Radicals are just as prone to frailties of character as industrialists.
It is by their actual effect on their community and environment that we should evaluate our fellow beings, not by some dominant virtue or fault which particularly excites us. It would be far preferable to tolerate a insensitive verbal bigot who in practice actually helped people than a pious hypocrite who mouthed politically correct platitudes and then went home and beat his lover. Anarchism involves conscientious and responsible judgement, and the effort to see through the shucks, facades and hype of our unregenerate society. There are plenty of actual villains out there, some easily identifiable, others hidden in hypocrisy. There are equally many good people obscured by the accidents of their birth, uprearing or situation.