(Source: The Washington Post)

The arrests of members of a Michigan-based "Christian" militia group should convince doubters that there is good reason to worry about right-wing, anti-government extremism -- and potential violence -- in the Age of Obama.

I put the word Christian in quotes because anyone who plots to assassinate law enforcement officers, as a federal indictment alleges members of the Hutaree militia did, is no follower of Christ. According to federal prosecutors, the Hutaree -- the word’s not in my dictionary, but its Web site claims it means "Christian warrior" -- are convinced that their enemies include "state and local law enforcement, who are deemed ’foot soldiers’ of the federal government, federal law enforcement agencies and employees, participants in the ’New World Order,’ and anyone who does not share in the Hutaree’s beliefs."

According to the indictment, the group had been plotting for two years to assassinate federal, state or local police officers. "Possible such acts which were discussed," the indictment says, "included killing a member of law enforcement after a traffic stop, killing a member of law enforcement and his or her family at home, ambushing a member of law enforcement in rural communities, luring a member of law enforcement with a false 911 emergency call and then killing him or her, and killing a member of law enforcement and then attacking the funeral procession motorcade" with homemade bombs.

Nine members of the Hutaree were named in the indictment. Eight were arrested during weekend FBI raids in Michigan, Ohio and Indiana; one suspect remains at large. The group’s Web site shows members in camouflage outfits traipsing through woods in "training" exercises. They could be out for an afternoon of paintball, except for the loony rhetoric about "sword and flame" and the page, labeled "Gear," that links to several gun dealers. Along with numerous weapons offenses, the Hutaree are charged with sedition.

The episode highlights the obvious: For decades now, the most serious threat of domestic terrorism has come from the growing ranks of paranoid, anti-government hate groups that draw their inspiration, vocabulary and anger from the far right.

It is disingenuous for mainstream purveyors of incendiary far-right rhetoric to dismiss groups such as the Hutaree by saying that there are "crazies on both sides." This simply is not true.

There was a time when the far left was a spawning ground for political violence. The first big story I covered was the San Francisco trial of heiress Patricia Hearst, who had been kidnapped and eventually co-opted by the Symbionese Liberation Army -- a far-left group whose philosophy was as apocalyptic and incoherent as that of the Hutaree. There are aging radicals in Cuba today who got to Havana by hijacking airplanes in the 1970s. Left-wing radicals caused mayhem and took innocent lives.

But for the most part, far-left violence in this country has gone the way of the leisure suit and the AMC Gremlin. An anti-globalization movement, including a few window-smashing anarchists, was gaining traction at one point, but it quickly diminished after the Sept. 11, 2001, attacks. An environmental group and an animal-rights group have been linked with incidents of arson. Beyond those particulars, it is hard to identify any kind of leftist threat.

By contrast, there has been explosive growth among far-right, militia-type groups that identify themselves as white supremacists, "constitutionalists," tax protesters and religious soldiers determined to kill people to uphold "Christian" values. Most of the groups that posed a real danger, as the Hutaree allegedly did, have been infiltrated and dismantled by authorities before they could do any damage. But we should never forget that the worst act of domestic terrorism ever committed in this country was authored by a member of the government-hating right wing: Timothy McVeigh’s bombing of the federal building in Oklahoma City.

It is dishonest for right-wing commentators to insist on an equivalence that does not exist. The danger of political violence in this country comes overwhelmingly from one direction -- the right, not the left. The vitriolic, anti-government hate speech that is spewed on talk radio every day -- and, quite regularly, at Tea Party rallies -- is calibrated not to inform but to incite.

Demagogues scream at people that their government is illegitimate, that their country has been "taken away," that their elected officials are "traitors" and that their freedom is at risk. They have a right to free speech, which I will always defend. But they shouldn’t be surprised if some listeners take them literally.

The writer will be online to chat with readers at 1 p.m. Eastern time Tuesday. Submit your questions and comments before or during the discussion.