NEW YORK (CBSNewYork)Colin Kaepernick’s disdain for the police runs from his head to his toes.

Photos have surfaced of the 49ers quarterback, who stirred controversy last week by refusing to stand for the national anthem, wearing socks at practice showing a cartoon pig wearing a police hat.

Kaepernick wore the socks on Aug. 10 and again Aug. 12.

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In an Instagram post, he said his reason for wearing the socks is the same reason he refuses to participate in “The Star-Spangled Banner.”

“I wore these socks, in the past, because the rogue cops that are allowed to hold positions in police departments, not only put the community in danger, but also put the cops that have the right intentions in danger by creating an environment of tension and mistrust,” Kaepernick said. “I have two uncles and friends who are police officers and work to protect and serve ALL people. So before these socks, which were worn before I took my public stance, are used to distract from the real issues, I wanted to address this immediately.”

Kaepernick ignited a national controversy after refusing to stand for the national anthem last Friday before the 49ers’ preseason game against the Green Bay Packers. He said he was protesting against “a country that oppresses black people and people of color.”

“To me, this is bigger than football, and it would be selfish on my part to look the other way,” Kaepernick said. “There are bodies in the street and people getting paid leave and getting away with murder.”

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Kaepernick said he will continue to sit for the anthem until there is “significant change.”

Bill Johnson, executive director of the National Association of Police Organizations, blasted the NFL for allowing Kaepernick to wearing the socks.

“It’s just ridiculous that the same league that prohibits the Dallas (Cowboys) football club from honoring the slain officers in their community with their uniforms stands silent when Kaepernick is dishonoring police officers with what he’s wearing on the field,” Johnson said.

“I think the league is in a downward spiral regarding their obligations to the public under (commissioner) Roger Goodell, and this is just another example of that.”

The NFL told USA Today it would not have an official response until after it consults with the 49ers, who play the San Diego Chargers in their final preseason game Thursday night.