The dead white guy was responsible for 100 million people dead, most of them non-European. If you want to feel guilty for something, feel guilty for denying that. His great idea was to abolish private property, such that you didn't own the very toothbrush in your hand, the clothes on your back, the house you built with your own hands - or your farm.

Why is it that rejecting the ideas of Marx led China (and Vietnam, and Singapore, and Taiwan) to unprecedented wealth? Why is Chile rich and Cuba poor? Why is North Korea dark while South Korea is alight? Why was Eastern Europe impoverished while Western Europe was wealthy? Why was the Comintern established, why did the Soviet Union foment revolution all around the world, why did Pol Pot stack up a million skulls?

And, most importantly, what exactly "colonized" Eastern Europe and China and North Korea within the span of 10 years to drive them so far behind Western Europe, Taiwan, and South Korea respectively?

It's all Marx. Every time. You want to atone for something, atone for that. That is your sin: converting millions of indigenous people to an alien, white, Western ideology that promised heaven and yielded hell.