Wikipedia has an interesting list and recap of the 22 US and British soldiers who voluntarily refused repatriation, that is return to their homeland, after the end of the Korean War much to the shock of their government. Most moved to China. One American soldier, Cpl. Clarence Adams stated the racism and discrimination he endured from his fellow white POWs and back home as a reason for his decision to not return to the US. During the upheaval of the Cultural Revolution, Adams returned to the US where he was charged and acquitted of treason.
"There was racism in the prison camps just as there had been in the Army. There were those whites who openly called us niggers and told us what they would do to us when they got us back in the States. I knew nothing about communism or any other 'ism,' but during many of my sleepless nights, I questioned why America was in Korea and what I was doing there. The more I thought about my life, the more I felt I had been used, cheated and betrayed."
His autobiography was posthumously published last year after his death in 1999. His family currently owns eight Chinese restaurants in Memphis.
Read more here.