Nike: Dream Crazy

Nike has doubled down on its controversial poster campaign featuring NFL quarterback Colin Kaepernick by unveiling a new short film created by Wieden+Kennedy.

 "If people say your dreams are crazy, if they laugh at what you think you can do - good, stay that way, because what non-believers fail to understand is that calling a dream crazy is not an insult, it's a compliment," says Kaepernick in the two-minute clip, which showcases sports stars such as LeBron James and Serena Williams in their younger days, alongside lesser-known but equally inspirational athletes like wheelchair basketball player Megan Blunk.

The second in Nike's new Just Do It series, the film follows Voice of Belief, featuring Serena Williams and her return to the US Open.