I knew an old guy in OKC, that was a Korean War vet that had a small jar full of gold teeth from dead North Korean and Chinese soldiers.
My godfather had a stack of cloth Chinese stars he took off dead chicom hats. Later, he was a Green beanie with the montagnards in Vietnam. He told me a story once about how they put a few VC heads on spikes, and the bad guys supposedly left the area alone for a while. You can rest assured that that sort of behavior would not be tolerated in today's media-saturated environment.