It does look like the Southern Poverty Law Center...
 

...is an institution which is basically very liberal in outlook and actions.

Articles about Southern Poverty Law Center - CNN


"Yet no one has gone as far as the New Black Panther Party, which on its website advocates a revolution for African-Americans. The group -- which is distinct from the better known Black Panther Party, founded in the late 1960s -- is described by the Southern Poverty Law Center as a hate group and a 'virulently racist and anti-Semitic organization.'" (quote from George Zimmerman article linked above).

"The Tea Party is not considered an extremist or hate group, 'but there are some strains of extremism' in it, he said.

On the organization's website, there is a new map that includes a list of all the hate groups and extremist organizations operating in each state. The rise of the Patriot groups is especially notable because this is the subset of radical right groups most associated with violence." (quote from increase in hate groups article).