Kaepernick's practice socks depict cops as pigs

San Francisco 49ers quarterback Colin Kaepernick caused a stir following his refusal to stand during pregame national anthems, and now he's drawing more criticism for his practice socks.

Over the past few weeks, Kaepernick has been wearing socks that depict police officers as pigs, according to John Breech of CBS Sports.

These photos are from an Aug. 10 practice session.

(Photos courtesy: USA Today Sports Images)

Kaepernick told reporters Sunday that his decision to sit during the national anthem was motivated by racial injustice and police brutality in the United States.

"There's a lot of things that need to change. One specifically is police brutality," Kaepernick explained. "There's people being murdered unjustly and not being held accountable. Cops are getting paid leave for killing people. That's not right. That's not right by anyone's standards."