I'm not sure what reporting you're looking at, but the shooter apparently was credibly engaged in a homosexual relationship with a same-sex individual who was "transitioning." Seems to me that latent homosexuality and the fact that he wasn't feeling accepted by a social movement that is growing in popularity - or rather rejected by a louder, and increasingly verbal group of right-wing people - is a likely motivating factor for this person taking his feelings and redirecting them outward in an act of extreme violence.
Maybe they weren't in a relationship and the shooter was merely acting out of a perception that his friend needed his honor defended. It doesn't really matter. The fact is that people can have whatever upbringing you want, and can turn out poorly - the opposite is true as well. They can be raised by right-wing priests and turn out blue-haired nymphomaniacs. Or they can be raised by left-wing granola bars, and wind up Jehovah's witnesses. You and everyone else understands this.
The sad part for all of us is that for a long time - a very long time - this country was getting along and moving in a great direction. Black culture was seemingly becoming less violent. Gays were winning (and have won) increased acceptance throughout all but the most backwater parts of our society. A generation of kids grew up playing together and not really caring about skin color or cultural differences, and so on and so on. Then, for whatever reason, that all seemed to change. I'm not sure why, but things were different. Not "I perceived that things were different," but actually different.
Now, we are becoming less "liberal" and far less tolerant. I lament we are becoming less liberal (in the true sense of the word), but I think that becoming far less tolerant is probably good and necessary. I think it is largely due to forces on the Left that demanded ridiculous, insane, and frankly, deranged capitulations. See "men have periods / can become pregnant," "men should be allowed to compete in women's sports," "black people are hunted by cops," "COVID didn't leak from a lab," etc. Those are my priors and I think evidence supports all of them in varying degree.
Jan 6th isn't happening dude. Sorry, it just isn't. It's not the Pearl Harbor or September 11th you wish it was. 25 years from now we're not going to be holding "Remember" ceremonies throughout our society. A few token dems might, but they'll be the only ones. In 69 years, we're not going to mark the "passing of the last survivor of the Jan 6th attack on the Capitol," except for maybe some future talking-head on MSNBC.
What it was in objective reality was a massive gathering of right-wing individuals (that got wildly out of hand), but which was organized in RESPONSE to actual, government-sanctioned anarchy that was ushered in and actively encouraged by prominent left-wing leadership throughout multiple layers of our government.
This includes presidential and vice-presidential candidates. It includes governors. It includes mayors. It includes senators. It includes congressmen and women. With our own eyes, we all saw the chaos begin to unfold starting in the Summer of 2020, and continue through to the election and inauguration of Joe Biden. It was the unstated TACTIC of the Democratic party, implemented in order to undermine Donald Trump. I'm not justifying Jan 6th, but let's also not pretend that it arose randomly and thus points at some underlying reality that the US is a KKK-style right-wing hellscape. That's all in your head dude. It happened because of COVID lock-downs and people getting bored. The dems saw an opportunity to re-focus this boredom into channels that applied pressure on fault lines within their many of their most favored political constituencies. They saw a political opportunity and capitalized on it. A cynical play for sure.
You can see them trying the same playbook again, but it's not having quite the same success this time around. Probably because we're not all locked-down with nothing better to do...