Jets not happy with questionable penalty call that turned the game late in 23-20 loss to Chiefs
Do NFL players, coaches face fines for criticizing officials? - ESPN - NFL Nation- ESPN
Eagles holding penalty: The controversial call which played a key role in Super Bowl LVII outcome
Are NFL Referee Crews Biased?. Examination of Referee Tendencies and…, by Jacob Klein
Referees should only throw penalties for the worst offenses
Does the NFL have an issue with referees missing so many game-changing calls?
The Five Most Outrageous Taunting Penalties of the 2021 NFL Season - The Ringer
Embarrassing' Refs Blasted by NFL Twitter During Bengals vs. Chiefs AFC Title Game, News, Scores, Highlights, Stats, and Rumors
Ref Brad Allen: We'll err on the side of calling helmet penalties in preseason - NBC Sports
In high school football, penalties are being called more than before
Browns-Steelers: Video shows refs miss clear penalty on last pass to Donovan Peoples-Jones - Dawgs By Nature
Who do we blame for all the holding penalties this NFL season?