Impossible is just a big word thrown around by small men who find it easier to live in the world they've been given than to explore the power they have to change it.
It should be borne in mind that there is nothing more difficult to arrange, more doubtful of success, and more dangerous to carry through than initiating changes. The innovator makes enemies of all those who prospered under the old order, and only lukewarm support is forthcoming from those who would prosper under the new. Their support is lukewarm ... partly because men are generally incredulous, never really trusting new things unless they have tested them by experience.
When people are oppressed, and human rights are denied - particularly along sectarian lines or ethnic lines - when dissent is silenced, it feeds violent extremism, it creates an environment that is ripe for terrorists to exploit. When peaceful, democratic change is impossible, it feeds into the terrorist propaganda that violence is the only answer available.
An orchard, good tillage, good grounds, seem a fixture, like a gold mine, or a river, to a citizen; but to a large farmer, not much more fixed than the state of the crop.
I can predict with absolute certainty that within another generation there will be another world war if the nations of the world do not concert the method by which to prevent it.
Don't let yourself be weighed down by what other people think, because in a few years, in a few decades, or in a few centuries, that way of thinking will have changed. Live now what others will only live in the future.