Seems to me that Stalin murdering about sixty million mostly Christian Orthodox Russians, Mao killing a hundred million Chinese deliberately and about that many more through his industrialization plans causing starvation, in the competition for what qualifies as the worst example the Holocaust doesn't win hands down just because the others are generally ignored.
Let us, then, hear the conclusion of the whole matter. Science is a magnificent material force, but it is not a teacher of morals. It can perfect machinery, but it adds no moral restraints to protect society from the misuse of the machine. It can also build gigantic intellectual ships, but it constructs no moral rudders or the control of storm-tossed human vessels. It not only fails to supply the spiritual element needed, but some of its unproven hypotheses rob the slip of its compass and thus endanger its cargo.
In war, science has proven itself an evil genius; it has made war more terrible than it ever was before. Man used to be content to slaughter his fellowmen on a single plain - the earth's surface. Science has taught him to go down into the water and shoot up from below and to go up into the clouds and shoot down from above, thus making the battlefield three times as bloody as it was before. But science does not teach brotherly love. Science has made war so hellish that civilization was about to commit suicide; and now we are told that newly discovered instruments of destruction will make the cruelty of the late war seem trivial in comparison with the cruelties of wars that may come in the future. If civilization is to be saved from the wreckage threatened by intelligence not consecrated by love, it must be saved by the moral code of the meek and lowly Nazarene. His teachings, and His teachings alone, can solve the problems that vex the heart and perplex the world.
The world needs a savior more than it ever did before and there is only one "Name under Heaven given among men whereby we must be saved." It is this Name that evolution degrades, for, carried to its logical conclusion, it robs Christ of the glory of a virgin birth, of the majesty of His deity and mission, and of the triumph of His resurrection. It also disputes the doctrine of the atonement.
It is for the jury to determine whether this attack upon the Christian religion shall be permitted in the public schools of Tennessee by teachers employed by the State and paid out of the public treasury. This case is no longer local: the defendant ceases to play an important part. The case has assumed the proportions of a battle royal between unbelief that attempts to speak through so-called science and the defenders of the Christian faith. speaking through the legislators of Tennessee. It is again a choice between God and Baal; it is also a renewal of the issue in Pilate's court. In that historic trial - the greatest in history - force, impersonated by Pilate, occupied the throne. Behind it was the Roman Government, mistress of the world, and behind the Roman Government were the legions of Rome. Before Pilate stood Christ, the apostle of love. Force triumphed; they nailed Him to the tree and those who stood around mocked and jeered and said "He is dead." But from that day the power of Caesar waned and the power of Christ increased. In a few centuries the Roman Government was gone and its legions forgotten; while the crucified and risen Lord has become the greatest fact in history and the growing Figure of all time.
~ William Jennings Bryan
Trial of John Scopes 1925 Dayton, Tennessee
You left out the Ukrainian Holocaust.
Don’t deliberately so they won’t get any uppity independence ideas