Agreed, but I don't see a way to make it never happen again. We are constantly evolving, repeating similar circumstances from history in the present but tweaking things a little each time. Throughout history, many measures to manipulate and control the masses have been tried starting with violence through to psychological warfare, each time the methods are tweaked, violence may achieve the desired results momentarily but leaders die and leadership (d)evolves. Making people bend to your will by changing their thoughts is much easier from a logistical point of view and less costly as well as having a greater effect when it can be pulled off like Nazism and Communism. The free market capitalist society in the West is finished in sense of fundamental management of Western society, freedom survives in underground type movements like cryptocurrency and decentralization. Governments are resorting to some kind of merger of neo-communist ultra leftism without the physical genocide and neo-feudalism where corporations are our new master kings conducting thought genocide on anyone getting sucked into the social media tapeworm that feeds on human souls.
As Facebook and co die off, as they are beginning to, decentralized platforms like steemit and dtube will do battle with the next reincarnations that the crooks in government and wall street colluding with big corps cook up for the masses. As the big guns die off some cool new hyped up pile of fecal matter will be ready and waiting with open arms to feed the masses need for likes and recognition. Funded by wall street, approved by governments and backed with the best and latest tech that most can't shovel down their throats fast enough.
RE: Facebook, When a Train Crash is No Accident