Just last year, NFL player Terrelle Pryor was fined $9,115 for expressing himself on the field by marching in place. Just last year, NFL players Victor Cruz and Odell Beckham were each fined $12,145 for expressing themselves on the field by mimicking the taking of a photograph.
In 1986, an NFL player was fined $5,000 for wearing a headband with a company logo on it. The NFL put a stop to it with threats of fines.
In September 2016, three NFL players planned to wear cleats in honor of the 15th anniversary of the September 11 attacks on America.