What person was the crime movie that featured a cameo from Sean Ringgold about?
Sean Ringgold:  He also had a cameo in "American Gangster" and the "Smurfs" movie. American Gangster (film):  The film is fictionally based on the criminal career of Frank Lucas, a gangster from La Grange, North Carolina who smuggled heroin into the United States on American service planes returning from the Vietnam War, before being detained by a task force led by detective Richie Roberts.
Frank Lucas