@Gonzo17

Let's say men of the same race with single mothers are actually less likely to commit crime

But black men are more likely to commit crime and men with single mothers are more likely to be black

Such that when race is not held constant if someone has a single mother as a parent then they are more likely to be black and therefore more likely to commit crime

But if someone is black & with a single mother they are less likely to commit crime then a black person without a single mother