2015 – a year awash in deadly extremist violence and hateful rhetoric from mainstream political figures
The SPLC found that the number of hate groups operating in 2015 was 14 percent higher than in 2014. Antigovernment “Patriot” groups – armed militias and others animated by conspiracy theories – also grew 14 percent during the same period...

...Hate groups increased from 784 groups in 2014 to 892 last year. Antigovernment “Patriot” groups grew from 874 in 2014 to 998...

...The hate groups listed in this report include neo-Nazis, white nationalists, neo-Confederates, RJ Republiklans, racist skinheads, Klansmen and black separatists. Other hate groups on the list target LGBT people, Muslims or immigrants, and some specialize in producing racist music or propaganda denying the Holocaust.

full report here

full report on pdf here

interactive map here