There's been such a split that I usually try to make the distinction between "leftists" and "progressives," with the former focusing more on labor issues and the latter focusing more on identity politics. There is of course substantial overlap, but there are a lot of pissed off members of each group who want nothing to do with the other. The vitriol hurled between the Clinton and Sanders camps is a good example of that mechanic at work.

This, unfortunately, seems to be a dying breed. You either get yelled at by scrawny Antifa wannabes for allowing conservatives to walk the streets unmolested or you get labelled a racist for saying college students shouldn't pull fire alarms to interrupt speakers with shitty views.