Please note that this joke shows how silly racial and ethnic stereotyping/grouping is, rather than endorsing it. Even so, on the off chance someone takes offense to this, PM me and I'll take it down.
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A Jewish guy and a Chinese guy are sitting at the bar talking politics. After a while, the Jewish guy gets upset and punches the Chinese guy. The Chinese guy asks, "What the hell was that for!?!?'
"That was for Pearl Harbor!"
"Pearl Harbor was the Japanese. I'm Chinese," he replies.
"Ahh, Chinese, Japanese, Korean. You're all the same."
Things cool down and they start talking again. Before too long, the Chinese guy takes a swing at the Jewish guy. "What was that for," the Jewish guy yells.
"That was for the Titanic!"
"What the hell are you talking about? The Titanic was sunk by an iceberg."
"Ahh, Iceberg, Goldberg, Steinberg. You're all the same."