James Holden: Anarcho-Syndicalist. Hates authority figures, is a staunch proponent of illegalism, organizes his crew into a sort of democratic worker co-op, is naive but not entirely to a fault and a wholesome idealist.
Alex Kamal: Just wants to grill.
Bobby Draper: Part of a soviet-esque military vanguard, a true committed revolutionary.
Naomi Nagata: While the OPA is draped in anarchist aesthetics in the text they also share a semblance to Maoist third worldist and anti-colonial movements.
Amos Burton: Crust punk anarchist, kicks in reactionaries' skulls and defends sex workers and his lgbt comrades claims to be unconcerned with "politics" but would definitely fall on the right side of a revolution.
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The first couple seasons are a bit rough around the edges but it's worth sticking it out. And Holden has some great character development through the series.
Hes bad in the show, but cool in the books.
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His being a freedom-of-information crusader in practice ending up an unintentional walking catastrophe is pretty interesting as a central character flaw
IIRC this is only really visited by the show in its first season. They outright ignored the political "twist" of the fourth book and made it a much more straightforward, triumphant story of humans coming together.