Broncos' Brandon Marshall ENDS NATIONAL ANTHEM PROTEST

Denver Broncos linebacker Brandon Marshall has decided to end his national anthem protest --- and will STAND when the Star Spangled Banner is played for the rest of the season.

Marshall was one of the first NFL players to join Colin Kaepernick's protest -- and said he would be taking a knee during the anthem to "raise awareness for social injustice and to start conversation about what all of us can do to make a positive change."

Marshall explained his decision to call off the protest on Instagram before the Broncos vs. Raiders game Sunday night ... saying:

"Going forward, I will be standing for the National Anthem -- not because everything is perfect, or because I'm changing my stance on things. But because of my hope for what we can become."

"Just because I am standing doesn't mean the work will end. There’s much work to be done. I’ll continue to recognize and support organizations that are stepping up as leaders and making a real difference in our community, and I will do my part to be there for those in need."

Marshall added, "I really appreciate the support from my family, teammates, coaches and fans. I’m grateful for those who have taken the time to hear me out. I’m excited for what all of us can accomplish when we truly work together."