Right wingers aren‘t just people who have been tricked, they are opportunistic and power hungry people. Similar to how mere proles will defend richt capitalists because they see a future version of themselves in the position of the rich capitalist, right wingers support systems of oppression because regardless at what spot they are they identify themselves with what is powerful in that system. They think from the perspective of „what if I had that power one day? then I could do this and I would have this“. Your arguments against this system of oppression is an encroachment of what their future version could do and have. That’s why they get so defensive. That is their thought process when they witness oppression and not „wow, there are innocent people suffering because of this system“. They don‘t consider being the victim even if they are ultimately victimized themselves. They identify with power.