One the one hand, the left is absolutely monolithic: They all always repeat the propaganda line their thought leaders tell them to repeat. E.g., halfway through Obama’s first term the party line became “There’s only one correct position on gay marriage: pro,” and all leftists started repeating this, with no admission that they’d ever thought otherwise. (If you point out this or similar examples they respond, with unblinking glibness, “Society has moved on.” Seriously, try it.)
On the other hand, the left is ravaged by factionalism, with trannies against feminists (lots of examples lately, for example this one), Hispanics against blacks, Jews against Muslims (recall the Ilhan Omar debacle), blacks against jews (e.g. Louis Farrakhan), gays against blacks, etc.
Let me expand on that last one: In 2005 a bunch of mostly white gay Harvard students condemned Jada Pinkett Smith, a straight black woman, for “heteronormativity”: https://www.nytimes.com/2005/03/16/opinion/meanwhilesensitizing-the-heteronormativists.html
Yes, with appropriate rhetorical footwork, you can be a white male Harvard student and still yell at a black woman for oppressing you.
From the NYT piece:
The latest brouhaha at Harvard University, home of the perpetually offended, is over a motivational speech telling women that they can have it all: career, marriage and children. The remarks, delivered by Jada Pinkett Smith on Feb. 26 at the Cultural Rhythms show organized by the Harvard Foundation for Intercultural and Race Relations, were deemed too heterosexual by some. Or, in politically correct newspeak, “heteronormative.”
Here’s a sample of what Pinkett Smith said, as recounted by The Harvard Crimson:
“Women, you can have it all – a loving man, devoted husband, loving children, a fabulous career. We are a new generation of women. We got to set a new standard of rules around here…”
The Harvard Crimson reported that some members of the Harvard Bisexual, Gay, Lesbian, Transgender and Supporters Alliance had been offended by the speech and were calling for an apology from the foundation… So what was the offense? In the words of the alliance’s co-chair, Jordan Woods, “Some of the content was extremely heteronormative…”
Contemporary observers noted that the bulk of these lunatics were white.
Another example, which could be relevant in the 2020 Presidential election in the very unlikely event that Bootigieg becomes the Dem nominee, is the conventional wisdom that blacks and hispanics just aren’t going to turn out to vote for an openly homosexual man with a “husband.”