Historically, with a really big war to remind everyone at the top that they are mortal and not actually disconnected from society.
Our elites have shown that they are uninterested in listening to protest on this and similar issues (violent and nonviolent alike), so I'm honestly not sure what else will do it. I'm also not advocating a really big war, and I'd like to see some other solution... but I'm drawing a blank on what that might look like.
Some of the more intelligent investors out there are actually warning their social bretheren that, if steps are not taken to reform wealth distribution and the economy that, at best, they are looking at a "Baader-Meinhof" solution to become popular...if not a more French arrangement, if you catch my drift.
My suspicion is that political elites already acknowledge this to some degree, hence the massive security and surveillance measures that have been put in place over the past couple of decades.