This topic seems to pretty strongly emphasize categories, while I generally see things in spectrums, continuums. Look instead at what specific issues you're concerned about, and consider who agrees and disagrees. It may not be consistent with whatever you mean by "anarchists". In fact you may have difficulty finding consistency in labels. Anyway, if anrarchism is based on "voluntary" action, it must be illegal, because volunteering is working for less than the minimum wage. :) Dan Robinson