Why do black people call white people "black boy" in America?

When they call white men "white boy", it is not racist. But if white men said "black boy", it would be racist as hell.

I don't know why white men allow this in America.

Here in Turkey, if an African rooted person call white Turks "black boy", very bad things would happen, maybe big fights or prison time.

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5 mo
Here in Turkey, if an African rooted person call white Turks "white boy"* i mean
Why do black people call white people "black boy" in America?
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