I humbling suggest that you writing this:
I understand why he was upset as libertarians are largely against violence and that is what many anarchists have been pushing for the last 40 years or so.
Means you don't understand anarchism. Please Google Voluntaryism. Anarchists are not for unjustified violence. You're thinking of a falsehood repeated by Hollywood and the media.
Voluntarism is incompatible with anarchy. Your post is a red herring argument.
Bwah? You clearly do not understand one or both definitions.