"Racist Attack" joke

A Jewish man walks into a bar and sits down. He has a few drinks, when a Chinese man comes in. The Jewish man jumps up and punches him in the face.
"Ouch!" the Chinese man says.
"What was that for?"
"That was for Pearl Harbour," the Jewish man says.
"But I'm Chinese!"
"Chinese, Japanese, what's the difference?"
And the Jewish man sits back down.
A few minutes later, the Chinese man walks up to the Jewish man and punches him in the face.
"Ouch!" the Jewish man says.
"What was that for?"
"That was for sinking the Titanic," the Chinese man says.
"Sinking the Titanic??? But that was an iceberg!"
"Ice berg, Goldberg, what's the difference?"