Bill Maher and the Southern Poverty Law Center seem to be on opposite sides with regard to Maajid Nawaz, a British activist described by HBO’s Real Time host as the founder of the “world’s first counter-extremism think tank.” The SPLC has included Nawaz on a list of anti-Muslim extremists. On Friday’s Real Time with Bill Maher, the host offered to contribute to a crowd-funded defamation suit that Nawaz said he plans to file against the SPLC. Saying he was “sick and tired”…