Why is erasing history so important to the Left?
They would like you to believe that their ideas replace all the wisdom and experience of previous generations. Like Cain, they refuse to obey God and seek the number one position by doing away with the competition.
This is the thinking of criminal organizations, emperors, ayatollahs, dictators and despots the world over. The power to force other people to do their will is an aphrodisiac to such people. Each of them believes only in the power that comes from terrifying those they rule over. Their common enemy? Constraint of any kind on their ambition to dominate others.