There's an important factor that you Doomer types seem to forget about. The pre-revolutionary French and the Arab Springers didn't have access to a particular pressure-relief valve that we do: DEMOCRACY. Instead of breaking out the torches and pitchforks, all that the disgruntled masses need to do is vote for the Pitchfork Party that will be newly created to (attempt to) deliver whatever it is that the masses want. If the masses want punitive taxes on the rich, then that's what we'll get.
There'll be unintended consequences, of course, like chasing rich people, their entrepreneurship, their businesses, and their capital and all foreign capital out of the country, but if this is what the masses want, we can have Venezuela right here. Everyone will be *equally* poor — mission accomplished! The 'revolution' will happen in the voting booth.
Strange that what we actually see in the first world isn't voters opting for far-left or far, far left-er types, but actually a tendency toward business-friendly conservative types. The Pending Doom(TM) is strictly a minority opinion, most particularly among the supposedly outraged masses.