Source:
BBCThe Interior Ministry said the group, with its racist, anti-Semitic agenda, was a threat to German society and the constitution.
The ban is the latest step by the government to curb the influence of far-right groups. It follows raids last year when the police seized material from HNG members across Germany.
The HNG, or Help Organisation for National Political Prisoners and Their Families, was founded in 1979 and is thought to have about 600 members. It calls itself a charity and helps those who have been imprisoned for their ultra right-wing views.
"It is no longer acceptable that imprisoned right-wing extremists are being strengthened in their aggressive stance against the free, democratic order," the German Interior Minister, Hans-Peter Friedrich, said in a statement. The organisation gave support to far-right prisoners who were "rejecting the democratic constitutional state and glorifying National Socialism", said the ministry.
Germany is determined to crack down on its neo-Nazi groups
Read more:
http://www.bbc.co.uk/news/world-europe-15003906
Not something we could do constitutionally in the US, but Germany does things differently.