The Viet Minh was established in 1941, was headed by Ho Chi Minh and was Marxist-Leninist from the start. It didn't take long after the Japanese expulsion to begin "agricultural reform" in the north, we all know what communist "agricultural reform" means. In 1954 when the country was partitioned, guess which direction the refugees traveled.

By your logic a simple letter from Kim Il and the USA should leave S. Korea.

Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats. H. L. Mencken