“There’s a long history in the US of anti-black oppression” - true, uncontroversial statement.
Switch “black” to “white” and it sounds like a KKK meeting and is no longer true
I agree that factual reversals aren't great for this example - e.g, for a gender reversal, bunch of men accusing women of being sexually aggressive doesn't make sense.
But it still holds very well for a lot of other things.