Don said, The Australian-born suspect sounds like a nut-case; DonDiego advises Mark to to take anything he says too seriously, . . . lest Mark get a reputation for citing nutcases.
Unless, of course, Mark can cite a better source for his assertion that "Trump is radicalizing a whole new generation of young men".
I'd point Don to an article penned by conservative writer Max Boot.
All acts of terrorism — all killings of the innocent — are an abomination, and one that is made all the worse when the victims are chosen for their skin color, ethnicity, sexuality or religious beliefs. In other words, when these are hate crimes rooted in pathologies shared by many others, rather than random emanations of a diseased mind.
He is describing how this guy isn't a lone nutcase. The shared pathology these folks have is the belief that they (the white males) are being replaced by Muslims, Jews, Blacks, feminists, immigrants, liberals and/or other ethnic groups in some sort of grand conspiracy. The New Zealand shooter referred to this trope as "The Great Replacement." Donald Trump subscribes to this theory himself at least when it comes to Muslims and immigrants.
Does Don Diego recall the chant from Charlottesville? "Jews will not replace us." Literally, on that day there was a whole Army of people assembled that subscribed to that same theory. That is what that chant meant. These people literally believe Jews and/or other ethnic groups are replacing them. Don't forget Trump referred to these people chanting Jews will not replace us as "very fine people." If I came across a group of people chanting "Jews will not replace us," my first thought wouldn't be these are very fine people.
The Pittsburgh synagogue shooter subscribed to this replacement theory. He believed that not only was the Hebrew Immigrant Aid Society replacing good white males with Jews but they were also behind the Central American migrant caravans as hyped by the President, Fox News, and others in the conservative movement.
Donald Trump frequently echos this very same replacement ideology when talking about immigrants or Muslims. In fact, on the day of the New Zealand shooting, he echoed the words of the shooter's manifesto when speaking about immigrants on our southern border. Citation
When the President uses this same replacement language and then praises people that speak these views as very fine people he is mainstreaming these beliefs. That is why many of these folks feel emboldened to act. I note many LVA posters have used this same white nationalist replacement language although I suspect (at least I hope) they don't know that it originated on these White Nationalist cesspools.
The Florida Yoga studio shooter and the Parkland school shooter also believed in this theory only their ire was directed towards women rather than Jews, Muslims or immigrants.
Which brings us to their seemingly odd preference in porn. They post cuck porn as a way to inflame themselves. They often include language like, white bois can't compete when the material is introduced. The cuck porn is often accompanied by an active discussion of how white women have replaced white males with black males because of a preference for larger black penises. They argue that before the feminist movement women were forced into monogamy with average looking white males. They say that now there is no longer forced monogamy even average looking females (Beckys) are content to have one night stands with Chads or with back men that have large penises rather than date average white guys like them. In their world, dateable women fall into two categories.

So what is a white nationalist to do because he can't get a date with a Becky or a Stacy?
Well, the answer is to date a "trap" or become a trap themselves. For those not versed in white nationalist speak, a trap is a female passing transexual. On a daily basis, they post tons of this type of porn and discuss it. Usually, in these threads, they debate whether having sex with a trap makes you gay. A lot of them come down on the side that they have evolved into not needing white women who don't want them and that as long as the trap is passable as a female then you are not gay. The even often conclude that sucking a cock doesn't make you gay if it is a sufficiently feminine cock.
Don said, as often with a post by Mark, had to look up some words with which he had been previously unfamiliar. And, again as usual, he'd've just as soon not have learned their meanings.
Note: I am happy to educate Don Diego about the motivations and beliefs of those he has freely thrown his lot in with.