Pro-Marxists like to deny that over a hundred million people were shot by firing squad, starved or otherwise brutally murdered during the 20th century by Marxist regimes who claimed they would be ushering in a utopian state.
Dr. Peterson describes the kind of person who would make such an argument to those who rightly oppose Marxism.
Jordan Bernt Peterson is a Canadian professor of psychology at the University of Toronto, a clinical psychologist, and YouTube personality. He began to receive widespread attention in the late 2010s for his views on cultural and political issues, often described as conservative. Wikipedia
The following 7 minute video, from the YouTube site, Ramble, shows Professor Jordan B Peterson speaking on the rise of modern leftism and their failure to practice what they preach.