Socialists? Marxists? Anarchists? Take your pick.
Criminal behavior, check.
Self incriminating coup planners, check.
Key players/agents: the administrative state: AKA the deep state, check.
At this link is a treasure trove of information on the people and what they are doing, planned and looking fwd to doing between now and the inaugration in 2021.
Here is a short (34m) summary of information from their own lips about the planning and plans.
At this link is a twitter thread about an advisor to the movement, his name is Aaron Berger.