From the 1940 Charlie Chaplin movie, The Great Dictator
Soldiers! don’t give yourselves to brutes – men who despise you – enslave you – who regiment your lives – tell you what to do – what to think and what to feel! Who drill you – diet you – treat you like cattle, use you as cannon fodder. Don’t give yourselves to these unnatural men – machine men with machine minds and machine hearts! You are not machines! You are not cattle! You are men! You have the love of humanity in your hearts! You don’t hate! Only the unloved hate – the unloved and the unnatural! Soldiers! Don’t fight for slavery! Fight for liberty!
Full text of the speech here