The 15th anniversary of the Oklahoma City bombing, which killed 168 people in the nation's worst act of terrorism before Sept. 11, 2001, has prompted renewed concerns about growing anti-government sentiment.
Is the political environment becoming so toxic that we could see another Timothy McVeigh emerge?
No one knows the answer, but fears that anger could escalate into action beyond the ballot box are not misplaced. Ninety-nine percent of angry Americans might be perfectly satisfied to rail at their TV sets -- or to show up at a tea party rally -- but it takes only one.
The biggest concern for security folks in Washington is the lone operator, the John Hinckley who tries to take out a president for his fantasy girlfriend. Or some variation thereof.
This is why "Don't retreat, reload," Sarah Palin's recent imperative to her tea party audience, felt so off. Obviously, she wasn't suggesting that people arm themselves, as she has explained several times since. Hunting and military vocabulary is hardly new to politics. We "target" audiences or "set our sights" on policies and politicians all the time. In the world of healthy competition, trophies are victories, not dead people.
But words matter, as we never tire of saying. If Jodie Foster could bestir the imagination of Hinckley, a Sarah Palin in the Internet age could move regiments.
Such fears are not unfounded. I hear daily from dissatisfied Americans who feel their duty isn't only to protest, but to fight if necessary. Here is just one recent example, in response to a column I had written about America's true centrist nature:
"Sorry, honey, but we don't need the squishy middle right now. We need the hyper patriots, the combat vets ready to defend the constitution with arms if necessary."
The distance between such thinking and examples of overt hostility seems too little.
After the health care bill's passage, Democratic congressmen were threatened. The brother of one had his home's gas line cut. At a tea party rally in Washington, some claim there were racial slurs aimed at, of all people, Georgia Rep. John Lewis, a civil rights hero.
All of the above have put the nation ill at ease. Add to the mixture of organic anger and grass-roots momentum the heckling language of Beck, Limbaugh and Co., and one fears that volatility could become explosive. What's next, militias?
Well, yes, now that you mention it. In Oklahoma, un-ironic legislators are sympathetic to a proposal to form local voluntary militias to thwart unwanted federal initiatives and to preserve state sovereignty.
"Is it scary? It sure is," tea party leader Al Gerhart told The Associated Press. "But when do the states stop rolling over for the federal government?"
Note to Mr. Gerhart: When their citizens go to the polls.
Whether we can now boast more wing nuts than in other times is debatable, though hate and vigilante groups, now numbering about 1,000, increased by 54 percent between 2000 and 2008, according to the Southern Poverty Law Center. Anti-immigrant organizations increased last year by almost 80 percent.
What is clear is that technology and social media have empowered the least sane among us and amplified their voices. Thus, a random racist at a tea party rally suddenly becomes the face of a group of people who are, on the whole, decent, law-abiding citizens with legitimate concerns about government expansion and the inherent erosion of individual freedom.
The challenge is to find a balance between vigilance and restraint. How do we expose the unhinged without emboldening them with attention?
The only palatable answer is what conservatives say they love best -- self-control and personal responsibility. When someone spews obscenities, shout them down. When politicians and pundits use inflammatory language, condemn them.
When you choose to remain silent, consider yourself complicit in whatever transpires.
Contact Parker, a syndicated columnist, at email@example.com.