NFL players protest during national anthem

Chicago Bears players line up linking arms during the national anthem before facing the Pittsburgh Steelers.

Pittsburgh Steelers offensive tackle Alejandro Villanueva is the sole member of the team to stand in the open for the national anthem while his teammates remained in the tunnel before the game against the Chicago Bears.

Pittsburgh Steelers outside linebacker Anthony Chickillo and other players remain in the tunnel for the national anthem before the game against the Chicago Bears.

Members of the Dallas Cowboys link arms before the national anthem at the start of the game against the Arizona Cardinals at the University of Phoenix Stadium on Monday, Sept. 25, 2017 in Glendale, Ariz.

Some members of the Oakland Raiders kneel during the playing of the national Anthem before a game against the Washington Redskins.

Washington Redskins players during the national anthem before the game against the Oakland Raiders.

Officials stand on the sideline of the Seattle Seahawks during the playing of the national anthem before a game against the Tennessee Titans. Neither team came out onto the field for the anthem.

Green Bay Packers players sit in protest during the national anthem prior to the game against the Cincinnati Bengals.

The Kansas City Chiefs’ Justin Houston is seen taking a knee during the national anthem before a game against the Los Angeles Chargers.

Buffalo Bills players listen to the national anthem prior to a game against the Denver Broncos.

Members of the Detroit Lions take a knee during the playing of the national anthem prior to the start of a game against the Atlanta Falcons.

Atlanta Falcons owner Arthur Blank joins arms with his players during the playing of the national anthem prior to a game against the Detroit Lions.

Jermaine Kearse (10), Josh McCown (15) Jamal Adams (33) and Jets CEO Christopher Johnson stand in unison during the national anthem prior to a game against the Miami Dolphins.

Miami Dolphins players Laremy Tunsil (67), Maurice Smith (27) and Jarvis Landry (14) lock hands with teammates during the playing of the national anthem before a game against the New York Jets.

Denver Broncos tight end Virgil Green (85) gestures as teammate Max Garcia, left, takes a knee during the playing of the national anthem prior to a game against the Buffalo Bills.

Members of the Houston Texans stand with arms locked during the national anthem before a game against the New England Patriots.

Philadelphia Eagles owner Jeffrey Lurie stands during the national anthem before a game against the New York Giants.

New Orleans Saints players sit on the bench during the national anthem before a game against the Carolina Panthers.

Members of the Indianapolis Colts stand and kneel for the national anthem prior to the start of a game against the Cleveland Browns.

Members of the Cleveland Browns stand and kneel during the national anthem before the game against the Indianapolis Colts.

Members of the New England Patriots kneel during the national anthem before a game against the Houston Texans.

Ravens outside linebacker Terrell Suggs, left, Mike Wallace, former player Ray Lewis and inside linebacker C.J. Mosley kneel down during the playing of the national anthem before a game against the Jacksonville Jaguars.

Jacksonville Jaguars players kneel down during the playing of the national anthem before a game against the Baltimore Ravens.

Baltimore Ravens players, including former player Ray Lewis, second from right, kneel down during the playing of the national anthem before a game against the Jacksonville Jaguars.