To be fair to the extreme left, the people who ended slavery more then a hundred years ago and put huge amounts of money and generations of effort into ending it have to be much worse human beings then the people who practice slavery to this day.
The ending of slavery comes from the same mentality as the one currently ensuring all the rather unfortunate events happening in our time. And it will lead to the obvious and inevitable conclusion.
No good deed goes unpunished.
And just like Atlantis, this civilization that had the rather naive and most heretical notion that humans are more angels then apes and should be treated as such, must suffer the consequence of such poor and unwise notions ordained by the Gods: Death.
Such is the endless cycle of all those who think to bring forth such ideas into deed.