Before WWII, people used to be racist and straight. But soon after, people become tolerant and retarded. Now racists and straight look like a minority. Average people are not afraid of nigger kike faggots anymore. They are dating literal sluts, but before, a non virgin woman before marriage was considered biological waste that nobody wanted.
I don't think it has to do with the change of ideology. I was born racist and straight without any ideology. I knew that niggers, kikes and faggots are disgusting. I knew that sluts are disgusting, full of STD, unable to be trad wives.
So how did this change happen exactly in society? Are the majority of people really mentally impaired, controlled by the current ideology? I think there must be a reason why Jews call people cattle, and are able to control everything, claiming that people are their slaves.
Basically, because you can get demoted, sued, or fired since LBJ's "nigger bill" (his words).
But that's reductive. Deplatforming was more powerful and less visible before the internet, and all socially promoted (televised) individuals were anti-racist for an entire (Boomer) generation. Televised groups of people were used like crowdshots of mask-wearers: to control the perception of the "vast majority" belief, and thus control normie behavior.
Anti-racism comes from (over)socialization. It's a social construct. By default, people observe and acknowledge differences between groups.