There must be some kind of “Truther Industrial Complex” that gets to work whenever there is a big, politically inconvenient news event. I don’t recall this getting into swing over Tim McVeigh, but for the 9/11 Hijackers and now the Tsarnaev brothers (and even the Aurora Colorado shooter), we already have people talking about “fake prosthetic limbs” and the massive set up that has taken place.
Like the JFK conspiracy theorists, there is the slight problem that these guys got into a shootout with ordinary cops, just like Oswald did with JD Tibbett.
I would say conspiracy thinking is a waste of time, talent, and brains, but the one striking thing among all these people is how pseudointelligent they are. The notion of logic, testable hypotheses, and nonselective reading of all the evidence is completely missing. In other words, while very critical of officials, they lack all critical thinking. They simply are results-oriented, stupid, and deranged, as well as possessing a flawed moral sense. I think they are a sign of the tenuous grip on reality that is implanted in a great many people by our flawed educational system.
It also doesn’t help that you have US Presidents giving some of these idiots street cred. I’ll never forget Jimmy Carter and Michael Moore side by side in a skybox at the 2004 Democratic National Convention. What a low point for the country . . . only to be outdone by some future atrocity, no doubt.