National Socialist black metal, commonly known as Nazi black metal or NSBM, is a subgenre of black metal music concerned with ideas of racial separatism and the Aryan race. Their racial and nationalist ideas derive in considerable part from Nazism, though they typically add a focus on virulent anti-Christianity. Along those lines, most bands of this type have adopted variations (with varying degrees of authenticity) of pagan beliefs and traditions, believing them to face destruction by Christian beliefs.
NSBM fans are likely to embrace racist forms of paganism or satanism, dress in Viking garb, wear "corpse paint" makeup, and carry coffins or skulls to concerts -- behavior that alienates many more traditional racist Skinheads.
The main NSBM organization is the Pagan Front, a confederation of bands, labels and activists in the U.S., Australia and across Europe.
NSBM bands have been featured in the traditionally Skinhead "Resistance" magazine, and NSBM labels have reached licensing agreements with Skinhead labels in Europe and with Resistance Records in the U.S. The largest NSBM scene today is probably in Poland.
Artists in the NSBM scene typically argue that not only Judaism but also Christianity is a major cause for the perceived present troubles of modern European peoples (Aryans according to Nazi ideology), which distinguishes them from many other neo-Nazis.
It appears that somewhat recently, the NSBM and Rock Against Communism (RAC) scenes have been uniting, as NSBM is increasingly being sold at RAC and other White Power music outlets, and known bands such as Gestapo SS and Bannerwar have covered RAC and Hatecore songs on their NSBM releases.
In fact, the only two identified NSBM bands that are known as crucial fl metal bands are Burzum and Graveland, only the former of which being one of fl metal's best known acts.