"Trains have so long symbolized hope, freedom and power -- what better metaphor could there be to represent our struggle and our assimilation into mainstream American life, " West said.

CNN: Artist paints his grandfather's history

He recalls that the Washington march was organised around a call for jobs as well as freedom, suggesting that, so long as white bosses discriminate against blacks in hiring, government has a responsibility to set the balance right.

ECONOMIST: The next King

Individual freedom should be prized and protected so long as no one is harmed.

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