It took a few years after I first reviewed Windows XP for me to realize the enormous omission from my initial assessment of that operating system: It didn’t even include the word “security.” It feels like I’ve devoted much of my work since to making up for that shortfall.

I’ve had the same unpleasant realization over the past few years about social media. Just as my first look at XP showed no imagination about how an OS designed to run on trusted networks would fare on the open Internet, my early writing about social networks evidenced inadequate foresight about how they might help bigots to bond.

Consider, for instance, the Twitter explainer I wrote for the Post in 2008. I loved writing that almost exclusively as a series of 140-character-compliant paragraphs, and I think as prose it holds up well. But although Twitter was still figuring out the basic mechanics of @ mentions then, the piece reveals no consideration of how Twitter’s architecture might let bigoted trolls recruit like-minded people to scale up a Twitter mention’s compelled attention into a denial-of-service attack.

The evidence was there: A year before, writer Kathy Sierra had endured a hail of death threats for the crime of having two X chromosomes while expressing value judgments about technology. But my attention was elsewhere.

I can file away my naïveté about Windows security on not doing enough background research, but I can’t untangle my lack of imagination about social networks from having used them exclusively as a straight white man with an Italian (read: Catholic) last name. On every social network I’ve used–from Usenet newsgroups to Slashdot to the Post’s comments to Twitter and Facebook–I’ve had the unrequested benefit of not being routinely attacked for my gender, sexuality, race or religion.

But I never quite realized that until writing about Gamergate. I spent the day before that Yahoo Tech post ran locking down every important account and steeling myself for a toxic response online. Then nothing bad happened and nobody tried to destroy my critique by impeaching my identity. I can now confirm that white privilege is a hell of a drug.

Since then, we’ve had another unforeseen development: a president who has bragged about sexual assault, regularly evokes such anti-Semitic memes as “globalists”–a laundered code word for international Jewish financiers–and said neo-Nazis in Charlottesville last August included “very fine people.” Trump’s dog-whistling seems to have encouraged some bigots to crawl out from under their rocks and look for company.

Some have also been inspired to look for ways to kill people they see as “the other.” This bigotry boom has a growing body count–in C-ville last year, where I paid my respects at the memorial to Heather Heyer earlier this month, and today at a synagogue in Pittsburgh’s Squirrel Hill neighborhood. Last week’s pipe-bombing attempts could have added to that toll.

I’m sorry that I was asleep to so much of this before. I think I’m awake now, but I want you to tell me if you see otherwise.