This is a Shreveport, LA high school football team
http://www.shreveporttimes.com/story/sports/high-school/football/2017/09/26/green-oaks-football-team-protest-during-national-anthem/706397001/
Green Oaks football team to protest during national anthem
Can’t pray in school, or be overt about your religion, but you can protest the national anthem. OK.