Why Is A World-Record Marathon Runner In A Kazakh Prison?

At the peak of his running career, Marat Zhylanbaev completed 30 marathons in 15 days and ran across deserts on several continents. But when he turned his energy toward joining the political opposition in Kazakhstan, he was sentenced to prison for allegedly supporting a banned movement. International human rights groups have called for Zhylanbaev's release, while he vows to keep fighting for political change from behind bars.