I would say because it originates from humans creating abstract Utopian and individualist concepts and tries to apply and shape the material world to fit it to a T or face condemnation instead of observing material reality to form material concepts to address the material world.

I will point to the actions of Lenin for an example:

MOLOTOV: It was in a small circle among us. Here is a telegram from Lenin to a provincial food commissar in his native Simbirsk in 1919: “The starving workers of Petrograd and Moscow are complaining about your inefficient management…. I demand from you maximum energy, a no-holds-barred attitude to the job, and thorough assistance to the starving workers. If you fail, I will be forced to arrest the entire staff of your institutions and to bring them to trial…. You must immediately load and send off two trains of 30 cars each. Send a telegram when this is complete. If it is confirmed that, by four clock, you did not send the grain and made the peasants wait until morning, you will be shot. Sovnarkom Chairman, Lenin.” I remember another case. Lenin had received a letter from a poor peasant of Rostov province saying that things were bad with them, that no one paid any attention to them, the poor peasants, that there was no help for them and that, on the contrary, they were oppressed. Lenin proposed the formation of a group of “Sverdlovers [adults from Sverdlov University]….” Lenin directed this group to go to the place in question and, if the report was confirmed, to shoot guilty parties right then and there and to rectify the situation. What could be more concrete? Shoot on the spot and that’s that! Such things happened. It was outside the law, but we had to do it…. Lenin was a strong character. If necessary, he seized people by the scruff of their necks.

• Quote from ‘Molotov Remembers’

One side would say these actions are evil and the other side wouldn’t bother with a monochromatic understanding of the world and say it was necessary