Robinson Meyer points out how Twitter makes it hard for the left to build solidarity. It's understandable, but not intuitive:
But by 2014, the Canadian academic Bonnie Stewart had noticed a change in how Twitter worked as a social space. Tweets that were written as chatty musings for one group of users were interpreted as print-like declamations by another. “The rot we’re seeing in Twitter is the rot of participatory media devolved into competitive spheres,” she said, “where the collective ‘we’ treats conversational contributions as fixed print-like identity claims.”
It's another aspect of the reality distortion that Twitter does that causes problems in so many other ways.