The fact that replacement soldiers, usually immigrants, could be hired or that a payment of $300 to the government could get a man out of the draft made the system very unpopular to many.
The answer is Leon Trotsky. He was born in Ukraine to rich Jewish farmers. On his last year in school, he was fascinated with Marxism and became a revolutionary. His power struggle against Joseph Stalin led to his banishment from the Soviet Union. He lived in Turkey, France, Norway and finally Mexico where he was assassinated by an agent of the Soviet Union's secret police.