Sorry, having grown up with a whole lot of Eastern Europeans, Finno-Ugrians and Central Asians - Estonians, Latvians, Lithuanians, White Russians, Ukrainians, Kalmyks, Finns, Hungarians, etc. - you learn early that they felt compelled to choose the Nazis over the oppressive Communists to rid their countries of those oppressive Communists. I don’t hold that against them. Thus, I’ve never believed the existence of ethnic based SS formations was anything in itself to be ashamed of. These people are thought of as patriots in their home countries by many of their fellows.
So why did Bandera and Crew go after Poles, who hated Communists even more than they did?