A government in the geopolitical landscape is much like an organism in the environment. Evolution is spurred on not by chance, but by selective pressure that prunes out the weak and unstable.
We've entered an era where Mutually Assured Destruction has reduced that selective pressure of superpowers down to nothing. In this environment, power can easily be pulled from citizens and placed into the hands of the autocrats who trust that the chances of being usurped is extremely low. And they're right.
There are social justice issues in the world, sure. But I think this issue of power redistribution is a big issue too.