Conquest, War, Famine, and Death. (Conquest seems to have morphed into Pestilence or Disease, but I don't know if that's in church teachings or just popular culture) And I don't recall anything particularly happening to them; they happened, each one killing a rather large percent of the earth's population.
Conquest (white horse, and carried a bow) was given a crown. War (red horse), a sword. And Famine (black) received a set of scales. I don't remember Death (the pale horse) getting anything. I think that was their order of appearance. HTH
There's nothing particularly racist or inciting violence that I can think of about calling them the 4 Horse-ladies of the Apocalypse. It's not a very flattering term, so maybe that makes it racist?
Conquest and War seems kinda redundant, maybe Conquest represents slavery or subjugation?