The number of hate groups rose again in 2008 - fueled by immigration fears, a failing economy and the successful campaign of Barack Obama. Since 2000, these racist extremist organizations - neo-Nazis, white nationalists, neo-Confederates, skinheads and others - have grown in number by 54%, according to the SPLC's latest count.
http://www.splcenter.org/news/item.jsp?aid=366

The SPLC identified 926 hate groups active in 2008, up more than 4 percent from the 888 groups in 2007 and far above the 602 groups documented in 2000. A list and interactive, state-by-state map of these groups can be viewed here:
http://www.splcenter.org/intel/map/hate.jsp

"White nationalist groups espouse white supremacist or white separatist ideologies, often focusing on the alleged inferiority of nonwhites. Groups listed in a variety of other categories - Ku Klux Klan, neo-Confederate, neo-Nazi, racist skinhead, and Christian Identity - could also be fairly described as white nationalist. The groups below range from those that use racial slurs and issue calls for violence to others that present themselves as serious, non-violent organizations and employ the language of academia. For many years, the largest white nationalist group in America has been the Council of Conservative Citizens, a reincarnation of the old White Citizens Councils that were formed to resist desegregation in the 1950s and 1960s."