Colorado made history as the first state in the U.S. to legalize marijuana for recreational use. NBC News correspondent Harry Smith tells the story behind this stunning development, which has been called one of the great social experiments of the next century.
Colorado made history as the first state in the U.S. to legalize marijuana for recreational use. NBC News correspondent Harry Smith tells the story behind this stunning development, which has been called one of the great social experiments of the next century.
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