【】Tweet may have been deleted

Just under a month after Colin Kaepernick chose to stay seated during the National Anthem before a pre-season game, the athlete brought his protest against police brutality to the high school football field. 。

The 49ers quarterback attended a football game at Castlemont High School in Oakland, California on Friday, kneeling during the National Anthem as members of the team laid on their backs with their hands raised. Their protest comes in the immediate wake of recent police shootings in Charlotte, North Carolina and Tulsa, Oklahoma. 。

ESPN analyst Kirk Morrison captured the moment on Twitter: 
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Tweet may have been deleted。

Over the past month, Kaepernick has chosen to sit or kneel during the anthem in protest of police violence against black people, a decision that's garnered both criticism and support. 。

On Sept. 16, the Castlemont Knights knelt in solidarity before its game, prompting the 49ers player to pay a visit. He addressed the team before its Friday night game, telling the students: "You are important, you make a difference. This matters."。

See the speech filmed in pieces below: 。

See the speech filmed in pieces below:。[H/T: CBS Sports]。