So tankies get to claim Wagner now?
The writers I mentioned did not endorse those things either, but nonetheless bear some responsibility for the results of their ideasNo, and I'm surprised you see one. Please show me in the writings of Marx those passages where he endorses mass murder, racism, induced famine, torture, gulags, etc.
The Holodomor was about 3-4M, not 7+Depends how you measure 'worst', doesn't it? If it's just a head-count, then I think the Holocaust is just behind (i.e., "better than") the Holodomor (at around 7+ million Ukrainians in around 2 years); and Mao's body-count is bigger again. The Great Leap Forward is said to have killed 45 million, for example, over four years.
Or you could look to Rwanda, where the Hutus managed to slaughter around a million Rwandans in just 4 months using nothing much more than machetes. For body-count per day, that would probably take some beating, as it were.
But if you measure it by the degree of planning and cold-blooded state organisation involved, the Holocaust is right up there.
I guess it's like Kelvin, Celsius and Fahrenheit: there are many scales on which to measure mankind's ability to do the inhuman.