Something local, with friends or meeting new friends, that involves connections to larger organizations but is more than a gear in a large machine. Many small projects with human connection.
That's not an easy fill-in-the-blank. I think effective activist culture might remind us more of the percolating young component of startup culture — thinking hackathons, not billionaires.
Information flow isn't "it," isn't the answer to your question, but is key: People who want this need a frame in the sense Lakoff talks about, where with a word you bring to mind many longer conversations. The information architects, I think, want to create memes and habits of interrupting every g.d. liberal whining fest, ideally we'd be organized enough to make it a ritual, where one person says "What are you doing about it?" and other people take that as their cue to list a half dozen projects, so every progressive sees an engaged community.