Story highlights Bradley Cooper played Chris Kyle in "American Sniper" film

Some people believed the actor was a Republican -- until they saw him at the DNC

(CNN) Every now and then, facts get a little mixed up with fiction.

Take the example of Bradley Cooper. The actor was at the Democratic National Convention in Philadelphia Wednesday night -- minding his own business -- when he started trending on social media.

Not because of his beard and flowing hair, which made him look like a well-moisturized pirate with glistening skin. But that's a whole other story.

Apparently, some people believed Cooper was a Republican, based on his riveting portrayal of Navy SEAL sniper Chris Kyle in the blockbuster film, "American Sniper."