Some milestones are major and must be noted: The firing of a football coach. The hiring of a football coach. The first time a western nation elects a president anything like Donald J. Trump.

And there are some milestones that, significant to some and insignificant to others, might go unnoticed. So for what it’s worth, let’s pause to note an upcoming demographic milestone for the city council of a local city very much into diversity.

Regardless of the outcome of the Austin City Council runoff in District 10 between incumbent Sheri Gallo and challenger Alison Alter, we’re about to have an 11-member city council devoid of a once-dominant, still-important demographic: Non-Hispanic white male Christian heterosexuals. Remember when they roamed the earth in great packs and dominated most levels of government?

And remember the not-too-distant past when Austin council members were elected citywide and there was what we called a "gentleman’s agreement," under which one seat would be reserved for a Hispanic council member and one for an African-American council member? Maybe those gentlemen need to reconvene and agree to somehow reserve a council seat for a non-Hispanic white male Christian heterosexual.

Just under 48 percent of Austin’s population is non-Hispanic white, according to the 2015 American Community Survey produced by the U.S. Census. About 35 percent of residents are Hispanic, 7.3 percent are African-American and 7.5 percent are Asian. Genderwise, Austin’s population — who number more than 926,000, according to the city — is pretty evenly split.

I couldn’t find stats showing how many non-Hispanic white male Christian heterosexuals we have in Austin, but I’m pretty sure I’ve seen some around town. And many of them probably are productive, solid citizens, despite what you might think of that overall demographic.

In its current iteration, the council has one non-Hispanic white male Christian heterosexual. He recently was fired. And, to some, Don Zimmerman night not be the pinnacle of non-Hispanic white male Christian heterosexualdom. He lost in November to Jimmy Flannigan, who is gay. Zimmerman had edged Flannigan to win the Northwest Austin District 6 seat in a 2014 runoff.

Through the end of the year, Zimmerman remains the only non-Hispanic white male Christian of any sexual orientation on the current City Council that includes seven females, three Hispanics, one African-American and a Jewish mayor. That seems like a nice diverse skew, one of which we’re duly proud and one that won’t change regardless of the outcome of the Gallo-Alter runoff.

But is there any feeling we should be less proud of a council soon to be devoid of a once-prevalent, still-present demographic, the aforementioned non-Hispanic white male Christian heterosexual part of our town?

It’s a demographic slice that, though far from oppressed, has entered challenging times after generations of running stuff. It was recently politically OK (in some people’s minds) for Symone Sanders, former spokeswoman for Bernie Sanders’ presidential campaign, to make this comment on CNN about who should be the next Democratic National Committee chairperson:

"In my opinion we don’t need white people leading the Democratic Party right now."

And earlier this year, conservative talk show host Michael Savage riffed about the current state of play for a specific segment of white people — the kind about to be absent on the Austin City Council dais. Somehow, Savage and some people of his ilk seem to be feeling oppressed these days.

"The most oppressed member of society, as I’ve said it before and I’m willing to stand by this again — the most ridiculed, the most oppressed member of society today is the straight, heterosexual, white, male Christians. Period. Period, end of story," Savage said. "Open season. The butt of every joke. Every advertisement shows them as a fool. You don’t hear that though too often, do you? It’s sickening. It can make you sick. The whole world’s upside down. It’s all a big lie."

Oppressed? Hardly. One of the few demographics (other than Aggies and, until a few years ago, blondes) that it’s politically OK to make jokes about? Yeah, probably. So what? If that’s the group’s biggest complaint, they don’t have a complaint.

For better or for worse, we live in a nation in which identity politics plays an increasingly important role at the ballot box.

Here in Austin, beginning with the new year, non-Hispanic white male Christian heterosexuals will have to try to get comfortable with the fact that there’ll be none of their kind on the City Council. And how’d that happen? Simple. A goodly number of non-Hispanic white male Christian heterosexuals voted for somebody not precisely like themselves.

And that kind of makes them the heroes of this story.