Bills were gangs of teenagers that dressed in cowboy outfits and went against the current political view. They wore cowboy hats that were brown and had cowboy boots. They were particularly drawn to Western movies, and "Billism" began to incorporate many of the motifs into their lives. The portrayal of Buffalo Bill in the movies was especially appealing partly because of the similarity to hunter heroes of Congolese culture. The character of Buffalo Bill had already appeared in over 20 films by that time, but the most influential movie is thought to be Pony Express, where Charlton Heston played Bill.