I think survival of the fittest encompasses much much much much more than that.
The most cruel monstrous murderous abominations survive. But so too do those who are terrified of them and do their bidding and obey and whimper and whine and beg and roll over and do anything they are told to do. No matter the evil involved. They dare not dare. So they don't. They just do/say/obey every day all day.
The "fittest" need an audience. All audiences are terrified of them. They know what awaits if they are disobedient. So they never are that.
Then there are "the others". Us. We the people. We expect RIGHT to triumph and justice and honesty and caring and fairness to prevail.
We're on our own left to our own devices with our only hope that of sticking together no matter whatever and speaking up and out until they murder us/silence us/get rid of us OR we conquer them.
That's it folks. That's all she wrote. Good luck.