anti defamation league
The Anti-Defamation League (ADL)
Far-left organization that strongly supports both multiculturalism (also here) and illegal immigration (also here). They frequently smear persons and groups as engaging in "hate", despite the fact that their definition of "hate" can't be trusted. Has tried to exploit two high-profile shootings in April and June of 2009.
They've engaged in partnerships with the Department of Homeland Security, and they may have been involved in that agency's infamous "rightwing extremists" report.