If you had gone around in 1920 telling people “In twenty years a major European country will be shoveling people into ovens by the trainload” you would have been thought a lunatic.
If, in 1989, when Reagan left office, someone told you in 20 years, we would have a black Muslim Marxist as President, who would seek the active destruction of America, people would have thought you a lunatic.
And correctly so .... because they didn't even produce the Wannsee Protocol until Dec. 1940 and begin their railroad-car gas-chamber experiments until the next year, and didn't get the Death Machine really cranked up until a couple of years after that.
But your point is well taken.