There isn't a need for anarchist attorneys.
There is a need for attorneys who can keep anarchists out of prison, and there may be an advantage to having attorneys who will manipulate or attack existing legal frameworks in ways that could benefit anarchists tactically, but those attorneys don't necessarily have to be anarchists.
I'm not sure what exact thing you're referring to when you say "anarchist communities" but I hope I haven't missed some nuance of the question.
