You would think Italians wouldn't be racist towards black people when white people were racist towards them
But I think that's why they treat other people like shyt. Racism is a mental illness that many people of color are the main victims of, but racism was also made to dupe white people too. Trick them into believing they are superior beings simply for having the "right" color.
That's why Jim Crow laws were enabled because that period during reconstruction when white folks couldn't own slaves and former slaves were unifying to build their own communities that rivaled the white ones was a probably the lowest point in white American history. The morale was low, white folks weren't working as hard as they used to, the southern economy was shyt so they made Jim Crows law to favor white folks and put black people at a disadvantage and the MORALE of white folks went up and they went back to working hard and restoring the economy.
The point is if you are white and treated like shyt in this country they will be extra salty with people of color for 2 main reasons
One to show solidarity with the ruling class, the Irish were shytted on until they joined the police force in droves and enforced that supremacy on black folks then they became excepted
and 2 because they are white they will take the anger out on another group they feel are beneath them because they need to feel some level of superiority (like all those nerdy kids who get picked on and bullied will be the most racist)