Many white Europeans were. But that means Muslims are bad guys...so forget I mentioned it. /s
Whites were the “preferred” slaves in the ancient Greek and Roman epochs.
And the Jews/Hebrews/Israelites, when not being slaughtered to the tune of about 6 million, were enslaved by the Egyptians, Babylonians, etc., for an average of 500 or more years each time.
So BLM and its bastard offshoots can shut the fornication up and get over themselves.