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He did it again, and this time he had company.

San Francisco 49ers quarterback Colin Kaepernick continued his protest of the national anthem, taking a knee while "The Star Spangled Banner" played at the preseason finale in San Diego tonight.

This time, he was joined by safety Eric Reid, who was not in uniform. The crowd booed as both players kneeled, while Kaepernick was jeered mercilessly when he played.

Kaepernick vowed on Sunday to continue protesting the national anthem until "significant change" was made in race relations.

The latest silent protest comes after photos surfaced showing Kaepernick wearing socks showing pigs in police uniforms.

Meantime, a Seattle Seahawks player did the same in order to show solidarity with Kaepernick. 

Cornerback Jeremy Lane sat on the bench during the national anthem before the team's preseason finale in Oakland. 

Kaepernick said afterwards that he's received a lot of support from fellow players, who "respect" what he's doing.

"I've had numbers of players [reach out]," Kaepernick said. "I think there are a lot of conversations happening not only in NFL locker rooms but around the country. I've also had friends that aren't on football teams say 'I respect what you're doing, I support you' and I've had more conversations about human rights and oppression and things that need to change in the last week than I've had in my entire life. And the fact that those conversations are happening is a start."

Kaepernick told ESPN that kneeling instead of sitting was a compromise that came about after discussions with NFL long snapper and former Green Beret Nate Boyer, who was standing next to him while the song played.

He blamed the media for portraying him as being "anti-American" and anti-military.

Kaepernick said he has "the utmost respect" for U.S. service members and realizes they put their lives on the line so he has the freedom to protest in this way.

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