Peterson's 12 Rules For Life, have you heard of this?

[Rev. Rye]

I'm very sincere, I hold you in high esteem, lol..and I don't think that you're incapable, I just note that the normalization of white supremacy has been very..very effective.  You're not supposed to realize that you've picked it up.  It's supposed to seem plausible.  It's supposed to be trivial enough to conform to some personal experience or another. 

It's supposed to seem plausible, at least assuming that the person involved hasn't developed the critical thinking skills necessary to think "wait, there could be a legit reason things are the way they are that doesn't fit into this worldview."

Like I've said before, especially in this thread, there's a lot I seriously question about the left, but I know better than to latch onto someone who seems to be saying what I'm thinking, but, deep down, is preaching an ideology that is more than simply questionable. 

When Stephen Dedalus in Portrait of the Artist as a young man admits to his friends that he's given up Catholicism, one asks if this means he'll become a Protestant, he replies:

—I said that I had lost the faith, Stephen answered, but not that I had lost self-respect. What kind of liberation would that be to forsake an absurdity which is logical and coherent and to embrace one which is illogical and incoherent?

This appears to have mirrored an actual exchange Joyce had; a woman asked the same question as his friend, and he said: “Madam, I have lost my faith, I have not lost my mind.”

I suppose my old morbid interest in the white supremacist movements (from the old days when we just assumed they'd stay irrelevant forever) trying to figure out how they ticked properly inoculated me from picking their bullshit up. I figured out what bullshit they were spewing to support it and I learned quickly to see it for what it was.

But, make no mistake, for a lot of people, it's hard. Take the case of JonTron.  RationalWiki's article on him ends with this section:

Jafari is himself half-Iranian[130] and has a Muslim grandmother.[131] It's a true testament to the progress of multiculturalism that someone categorized as nonwhite by white nationalists[132] and Jafari himself[133] can now freely defend white nationalism.
Jafari has provided a cautionary tale in how alarmingly effective alt-right propaganda has become in recent years, especially considering Jafari is someone who has done the following:

• Voted for Barack Obama twice[134]
  
• Used to support Bernie Sanders[135]
  
• Happily uses a person's preferred pronouns[136]
  
• Voted in favour of same-sex marriage[137]
  
• Is the child of two immigrants[138]
  

He's "one of those people," the son of two immigrants, one of which considers itself a mortal enemy of the US, and he'd almost certainly suffer if the alt-right had their way, and Trump could actually get his way. He's pro same-sex marriage, he voted for Obama twice, and even supported Bernie Sanders. And yet, he's still repeating the logic behind the "white genocide" bullshit, seems to believe there's a plot by Mexico to take the land they lost in the Mexican-American war, and is convinced that black people are inherently more criminal than white people (which isn't exactly borne out by the evidence). That's how effective it's been.

[protip about that last link: South Africa, with its sizable white minority is the worst on the continent, and Ghana, where many locals have never seen a white man in person, is far safer, indeed, only a little less safe than the US, but actually marginally safer than Sweden; Ireland, the whitest nation on Earth with 96.4% whiteness, has a crappier score than Tunisia, which has 1% white people]

Also, Cracked has an article about this phoenomenon, and it's one of the more thought-provoking articles on the site.

Hopefully, this will put this into more perspective.