A day after most of the N.F.L. engaged in at least some form of demonstration during the national anthem, the Dallas Cowboys, along with the team’s owner, Jerry Jones, linked arms on the University of Phoenix Stadium field Monday night and collectively took a knee before the anthem was played.
The Arizona Cardinals, the Cowboys’ opponent, linked arms in the end zone with some military personnel, and by the time the pop star Jordin Sparks had begun singing the anthem, Mr. Jones and his team’s players had moved to the sideline and were standing with linked arms. The crowd, which had booed as the Cowboys were kneeling, let out some loud cheers at various points during the song.