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

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

"We appreciate all the hard work and collaboration that went into this film," the network said in a statement.