The players all kneeled with owner Jerry Jones and his family before a giant American flag was unfurled, drawing some boos from the Cardinals fans.
They rose arm-in-arm just before the singing of the anthem.
That action follows recent comments from President Donald Trump calling for the those who kneel during the National Anthem to be fired.
People of all ages are taking note of the protests.
President Donald Trump made it clear how he feels about NFL player protests this past weekend.
"Wouldn't you love to see one of these NFL owners, when somebody disrespects our flag, to say, 'Get that son of a b**** off the field right now," President Trump said. "Out. He's fired. He's fired."
Since then more than 200 players and coaches took a knee, linked arms, or sat during the National Anthem.
Now, local coaches and parents are using the protests as a learning tool.
"We're just really dealing with them not knowing what's going on and trying to have a teachable moment and get them through it," said Hughes.
The teams of the Fellowship of Christian Athletes huddle before games and the National Anthem isn't played, but these young players have seen their favorite NFL players take a knee which prompted conversations with their parents.
Matt Glasrud has an 11-year-old son who plays football and has seen his favorite players take a stand.
"He certainly has and he, you know, his initial reaction is pretty common that he doesn't think that's right that they're doing that," Glasrud said.
But some may still try to follow suit.
"They're going to reenact what they see without an understanding of truly what it is that they're following but it's they're favorite player and so they want to mimic what they see," said Hughes.
"It's really touchy but I do think it's a great opportunity to talk to the kids about others perspectives and until you face some of the challenges as a minority, you don't understand that," said Glasrud.
And with all the hype surrounding protests and sports, now seems like a good time to come together.
"Honestly we might be able to take lessons from the kids here when we're thinking about unity and getting together and finding ways to overcome our problems," said Hughes.
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The Dallas Cowboys made a show of unity before their game against the Arizona Cardinals on Monday night.