I watched quite a bit of Charlie Chaplin getting into scraps and fisticuffs in order to formulate this sequence. The Tramp was no coward and was ready to throw down, usually with dudes twice his size, but it was always in support of the right cause.

Of course there is the fight with the bruiser in The Kid, and the boxing match in City Lights, but there were several other gems that I really adore that influenced this gag.