The Dallas Cowboys took a knee before Monday night's game -- all of them, including owner Jerry Jones -- as a show of support for those protesting police brutality and racial inequality across the United States.

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Before playing the Cardinals at University of Phoenix Stadium in Glendale, Arizona, the Cowboys locked arms and took a knee, head coach Jason Garrett and team owner Jerry Jones included.

Sports Illustrated reported that the Cardinals players locked arms with members of the military during the anthem.

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Jones has applauded the Cowboys in the past for not protesting the flag.

"I just feel so strongly that the act of recognizing the flag is a salute to our country and all of the people that have sacrificed so that we can have the liberties we have," Jones said on a Dallas sports radio show in August. "I feel very strongly that everyone should save that moment for the recognition of the flag in a positive way, so I like the way the Cowboys do it."

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The joint effort took place before the anthem was performed by Jordin Sparks. The players and personnel were audibly booed as they kneeled.

Earlier Monday, 105.3 The Fan reported that the Cowboys planned to make a "statement of unity" before the game.

During the anthem, players on both sides were seen standing and locking arms.