As the article says, the difference between the old constitutional vigilantism and the current version is support from the likes of Fox News and many in the Tea Party sympathetic Right wing blogosphere:
The protesters at Bundy Ranch voice the same rhetoric of constitutional vigilantism honed by the Klan, the Posse, and the militias. What has changed is that this philosophy is no longer limited to the radical fringe but has become a respectable position offered up by mainstream political figures like Nevada Sen. Dean Heller, who called the protesters “patriots,” and by a stream of Fox News commentators like Sean Hannity and Andrew Napolitano, who called Bundy a hero for standing up to federal abuse.
Emboldened by their apparent victory at Bundy Ranch, the new constitutional vigilantes are asking where they can take the fight next. Cliven Bundy declared it a victory for “We the People.” But that can only be true if we want the Constitution to mean whatever an armed mobStand proud, Rupert Murdoch. Your search for ratings and profit is making America a more dangerous place.
says it means.