A decade after Colin Kaepernick took a knee during the national anthem, the moment still follows him.

In 2016, the former San Francisco 49ers player first sat, then knelt, during the anthem to protest police brutality. The gesture spread across professional sports and turned Kaepernick from an NFL quarterback into one of the country's most recognizable athlete-activists.

It also ended his football career.

Kaepernick has not played in the NFL since that season. He told NPR's Morning Edition he still trains and prepares to play.

"If there's a small chance of success or probability, my goal is to be able to go out and capture that, " said the Superbowl quarterback on the odds of him returning to the field.

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