Kind of a bitterness game. The premise is that it was an impure event, therefore it should be subjected mercilessly to punishment by gods of purity (which, however, somehow the liberals still manage to evade themselves).
We can see plain old sin quite clearly here. And it is a human game, not just a “liberal” game.
All liberals (especially white ones) who denigrate Columbus and American culture should lead by example and immediately give ALL their stuff to the nearest Native American and LEAVE THE DAMN country NOW! Go hang with your Muslim buds in Europe, this country will be greatly improved by your absence!