The Anarchist Black Cross works to help out anarchists around the world who are in trouble with the authorities. The War Resisters League . While not explicitly anarchist, their opposition to militarism and emphasis on direct action and community organizing and empowerment is definitely in keeping with anarchist theory. They also have a California branch and a Michigan one. Books for Prisoners.
Anarchists alone consider the modern penal system to be inhumane and worthy of abolishing.
What it means is we think that the police, court, and prison systems are by no means the solution. Another such group that does this is E.G. Smith Distribution. There are a number of anarchist publishing collectives out there, too. They are excellent sources of information for any local group. The language barrier remains a way people are divided.