In 2016, San Francisco 49ers quarterback Colin Kaepernick knelt during the National Anthem before a preseason game against the Green Bay Packers in protest of racial injustice and police brutality. The response to this was his jersey becoming the top-selling among NFL players at the start of the

It is believed the series can still be shopped elsewhere, a source briefed on the situation told The Athletic.

The multi-part documentary series would have given Kaepernick the chance to "tell his story from his perspective."