The Panthers were right. Revolutionaries should be armed.
If I recall correctly, the tenet was that every movement needs a non-violent faction and a radicalized faction. The non-violent faction is the carrot to the radicalized faction's stick. A comparison might be labor unions: unions are supposed to be a reasonable compromise to managers not getting dragged out of their houses and beaten to death in the middle of the night (or assassinated in other ways). See: Renault CEO Georges Besse.
Unfortunately, so many pro-citizen, pro-labor movements have been overrun by the "strictly non-violence!" mindset and thereby defanged. Additionally, we're the labor, for fuck's sake! We could absolutely hit every oligarch and politician right where it hurts, yet here we are.