NFL Players To Wear Flags On Helmets To Promote 'International Diversity'
With Eye on Concussions, NFL Adopts New Rule on Helmet Hits
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NFL to Roll Out More Social Justice Messaging in 2021 Season
Why do NFL teams wear an American flag on their helmets, given that both teams on the pitch are always American? - Quora
Steelers debut new, safer helmets for off-season training
NFL: Flag decal on helmet can't be removed - NBC Sports
N.F.L. Will Allow Six Social Justice Messages on Players' Helmets - The New York Times
NFL announces more steps to reduce head injuries
NFL Players To Wear Flags On Helmets To Promote 'International Diversity'