Football fans burn Kaepernick's jersey in protest of his protest

SAN DIEGO, CA - SEPTEMBER 01: Colin Kaepernick #7 of the San Francisco 49ers signs autographs for fans after a 31-21 win over the San Diego Chargers during a preseason game at Qualcomm Stadium on September 1, 2016 in San Diego, California. (Photo by Harry How/Getty Images)

Kaepernick's jersey is selling well online, and while some people people might've bought it in support of the player, others have decided to protest his protest by setting their purchases on fire.

Right now the number one selling item at NFL.com is Colin Kaepernick's jersey, which started selling like hotcakes after the quarterback sat during the national anthem.

Presumably some people are buying the shirts to show solidarity with his message, but others have been critical. Some have gone as far as to burn their purchases and posting their videos online.

For some the debate surrounding Kaepernick's choices raises tough questions about the behavior of NFL players and that of football fans.

ESPN's Jane McManus explores those questions with Alex Cohen.