National Anthem Backlash Builds for 49ers QB Colin Kaepernick

The White House and Donald Trump weighed in on the NFL star's National Anthem protest as fans burn his jersey and his former teammates speak out.
1:47 | 08/30/16

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Transcript for National Anthem Backlash Builds for 49ers QB Colin Kaepernick
Now to the growing debate sparked by colin kaepernick. The pro quarterback's national anthem protest has drawn a barrage of criticism. Others including the white house defending his free speech rights. ABC's Matt Gutman has the latest. Reporter: This morning, it's not tacklers that 49er quarterback colin kaepernick is dodging but a growing swarm of critics. Fans burning his number 7 Jersey. Move to Canada. Reporter: A sentiment on Monday echoed by Donald Trump. I think it's a terrible thing. Maybe he should find a country that works better for him. Let him try. It won't happen. Reporter: The famously tattooed kaepernick drawing flack for sitting on the bench at a preseason game last week as the rest of his team stood for the national anthem. That sit-down, a stand, he says, he was making against racial injustice. I'll continue to sit, I'm going to continue to stand with the people that are being oppressed. When there is significant change and I feel like that flag represents what it should I'll stand. Reporter: While the NFL does not require its players to stand for the anthem, kaepernick says he won't actively recruit his teammates to follow suit and in what could be seen as a truce, team leaders at the 49ers have agreed not to openly criticize him. The same can't be said for former teammates like Alex Boone whose brother is a marine. You have to show respect. It's shameful. Reporter: Kaepernick said he would encourage others to join him but his anthem sit-in has attracted followers. Mike Tavares said he will sit out the national anthem. Kaepernick says he's committed to boycotting "The star-spangled banner" for the rest of the season. Thank you. Now to a search for answers

This transcript has been automatically generated and may not be 100% accurate.

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