Leading up to the 2014 FIFA World Cup in Brazil, the United States men's national team have gradually adopted a simple rallying cry—"I Believe."
In early April, ESPN released their first promo around the song that's typically heard in the stands at USMNT matches.
Now a bevy of celebrities have joined in on the popular chant, with Jon Hamm, Cam Newton, Ice Cube, Barry Sanders and Rajon Rondo getting in on it, just to name a few.
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