NFL
Reasons to boycott:
Plans to play the "Black National Anthem" in every Week 1 game of the 2021 season and at major events (source)
Investing $250 million toward "equity" and “social justice messaging” (source)
Released an official commercial that said “football is gay”, which implied at the end that you're guilty of letting young people die if you don't affirm their homosexual identities (source)