New Orleans Saints - The Catholic church and other religious entities which include the concept of a saint in their doctrine are offended that an NFL team would consider their holy label as a mascot for a brutal, greedy sport.
Atlanta Braves - Native American tomahawk chop? Don't think so.
Florida St Seminoles - See Redskins and Braves.
Auburn, LSU, Detroit, Missouri, Memphis Tigers - Tigers are on the endangered species list and using the tiger as a mascot invokes a negative depiction of the animal which will lead to poachers and wrongfully fearful people killing massive amounts of protected tigers.
Alabama Crimson Tide - Disparaging against women's menstrual cycle.
South Carolina Gamecocks - Cock fighting is illegal and the use of this mascot inspires gamblers to use the innocent animal in competitive, brutal, murderous sports.
New York Knicks - Sounds like an abbreviation of the "n" word.
Syracuse Orange - It's just a fucking color. That's unacceptable and disparaging to all rational thought.
Stanford Cardinal - See Syracuse. Add an 's'. Use bird.
Chicago White Sox - Why not black sox? Rainbow sox? Racial Equality Sox?