It's easy enough to put down an uprising if you've got militarized robots on your side. In 30 years, we should have autonomous drones capable of all sorts of insanity. In 50 years? Human soldiers might be damn near obsolete for most missions. Got an uprising? Send in robots equipped with tear gas, deafening loudspeakers, incredibly bright spotlights that are blinding to look in the general direction of, and microwave emitters that cause the sensation of your skin burning if you don't leave the area. The potential of drones as a method of crowd dispersal are pretty immense, and they could essentially form a tireless force. Also, given that the Geneva convention doesn't apply to things used on your own citizens, they could utilize certain things that the military has already provided proof-of-concept of, such as blinding lasers that can automatically focus on the eyes of targets (a Humvee-mounted anti-sniper device was developed with this capability by DARPA, but was never deployed because of good 'ol Geneva). Throw four high-power autotargetting lasers on a quadcopter? You could temporarily or permanently blind an entire crowd in minutes. That's the sort of thing no one would want to develop today, but a desperate government could throw it together with today's technology to deal with a situation that got out of hand, along with numerous other suppression means ("Do you like being able to see? Then you'd better not protest, because that's how you lose your ability to see.). If it's a serious one, send out robots designed to kill. The trouble with automation is that it has the potential to take the humanity out of everything, even war.