Henry David Thoreau and during his time at Walden, Thoreau spent a night in jail for refusing to pay his poll tax. He withheld the tax to protest the existence of slavery and what he saw as an imperialistic war with Mexico. Released after a relative paid the tax, he wrote “Civil DisobedienceExternal” (originally published as “Resistance to Civil Government”)
I'm not exactly sure, but I think this statement is true, although the antagonist can sometimes be a rival to the protagonist without knowing. It really depends.