Colin Kaepernick was blackballed from the NFL for kneeling during the Pledge of Allegiance. Look at what happened to the Dixie Chicks:
> On March 10, 2003, during a London concert, nine days before the 2003 invasion of Iraq, lead vocalist Maines told the audience: "We don't want this war, this violence, and we're ashamed that the President of the United States (George W. Bush) is from Texas," which garnered a positive reaction from the British audience but led to a contrasting negative reaction, and ensuing boycotts, in the United States, where talk shows denounced the band, their albums were discarded in public protest and corporate broadcasting networks blacklisted them for the remainder of the Bush years.