There really are parties that advocate seizing the factories and putting them in the hands of workers to manage. Social democrats in Europe like Sanders are centrist. But here in the "land of the free" there isn't even major media outlet that advocates such opinions.
https://www.politico.eu/article/5-things-europeans-must-know-about-bernie-sanders-us-2016-clinton/
https://www.theatlantic.com/ideas/archive/2019/08/real-socialists-left-bernie/596890/
The fact that there are some nutcases still clinging to marxism in 2021 doesn't make Bernie a centrist.
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