The shootings earlier this month in Tucson, Ariz., have triggered calls for restraints on the TV and radio talk show hosts who, supposedly, facilitated or actually engaged in hate speech that may have led to that tragedy. (For examples, hop on Google and you’ll find half a million cites for the words “Tucson” and “hate speech.”) They’ve resulted in calls for crackdowns on firearms.
We’ve also been bombarded with explanations for how this could have…