That isn't good enough for liberals. We must atone for our past transgressions.
I often wonder if people in Cambodia laughed and mocked the Khmer Rouge before they started murdering everyone.
To your point about the Khmer Rouge, that is exactly the plan liberals have for us, if they ever truly get power and get us disarmed ("good luck" with that attempt, since so many of us know the history of repressive regimes).