One side, applying the doctrine of intersectionality, believes that all progressive issues–economics, the environment, gay rights, trans rights, abortion, racial justice, feminism, gun control, etc.–are connected and cannot be separated from each other. As a result, they insist on doctrinal purity, as it were, and will not work with anyone not equally committed. The other side is willing to do what it takes to pass their favored policies, even when it means forging temporary coalitions with people who oppose them on other issues.
Here is how Harris explains it:
One way to think of the contest roiling the progressive movement is between “lumpers” and “splitters.” The lumpers see American society in need of a sustained and comprehensive overhaul, and are wary of people, even potential allies, who don’t share this synoptic worldview. A core assumption is a commitment to “intersectionality” — the concept that contemporary power arrangements reflect historic and overlapping patterns of discrimination on grounds of race, class and gender and that progress on specific issues must include challenging the underlying power structure.
The splitters prefer to take one issue at a time, and are happy to accept an ally on, say, climate change or gun control, even if that person doesn’t share their views on abortion rights or how to remedy systemic police violence against Black people. In their view the choice isn’t sweeping progress versus incremental gains. It is incremental gains versus no progress at all.
He draws on another article on the “meltdowns” that are occurring throughout leftist organizations. These often consist of conflicts between leaders and staff members who are raising questions about sexism or racism in the organization itself and who are objecting to the organization’s ties to people who are not doctrinally pure.
Many organizations that were once single-issue advocacy groups have broadened their focus to implementing the entire progressive agenda. For example, the Sierra Club has become well-known as an environmentalist organization. Now its official definition of environmentalism includes the “environmental health of all communities, especially those communities that continue to endure deep trauma resulting from a legacy of colonialism, genocide, land theft, enslavement, racial terror, racial capitalism, structural discrimination, and exclusion.”
NARAL (originally the National Association for the Repeal of Abortion Laws that now just goes by the acronym) is a leading pro-abortion organization. But now it also proclaims, “If your feminism doesn’t include trans women and girls, it’s not feminism. If your feminism doesn’t understand how anti-trans policies disproportionately impact BIPOC folks, particularly Black trans women and girls, it’s not feminism.”
Left-leaning pragmatists–for example, Hillary Clinton–worry that the “all or nothing” mindset will lose elections and prevent any part of their agenda from being accomplished.
The reversal of Roe v. Wade may unite progressives. But they will still have to decide if they can make common cause with libertarians on the right, which might be an effective coalition in the pro-abortion cause. The purists, though, will refuse to do that. And especially if their protests continue to be violent, that may turn the general public against them.