Did San Francisco 49ers quarterback Colin Kaepernick lodge another silent protest before the world discovered he was sitting for the national anthem?

Earlier in August, a reporter took note of the socks Kaepernick was wearing to practice:

Colin Kaepernick's socks from practice today. That's a police bulldog. pic.twitter.com/AN92dY1hhW — Courtney Cronin (@CourtneyRCronin) August 12, 2016

But a few weeks later, a photographer discovered similar photos from August 10 and pointed out they appeared to be socks that depicted pigs wearing police hats (in case you’re not aware, “pig” is a derogatory term for an officer):

UPDATE: Kaepernick appeared to issue this statement via Instagram on Thursday.

https://www.instagram.com/p/BJ0vPsQAGZQ/