http://www.ninersnation.com/2016/9/1/12748234/colin-kaepernick-cop-pig-socks-kezar-practice

Personally, IDGAF about what he puts on his socks, but I doubt this is going to play well. I can easily see the small amount of good will that he has could easily evaporate as the new story becomes "Kaepernick thinks all cops are pigs!!!"

The context (besides the obvious): 1. SFPD has been going hard against him since the story broke and 2. SFPD is embroiled in some serious scandals involving everything from questionable shootings to racist text messages.