It appears that San Francisco 49ers quarterback Colin Kaepernick was making political statements well before his decision to sit for the national anthem during last week’s preseason game.

Photos that were taken during an Aug. 10 training camp practice showed Kaepernick sporting socks with images of pigs wearing blue cop hats. "Pig" is used as a derogatory term for a police officer.

Thursday afternoon, Kapernick responded to the socks controversy in an Instagram post.

In the last week, Kaepernick has received criticism and praise for his decision to sit out the national anthem, which he said was his way of protesting against police brutality and racism.