By Stanley Fish April 6, 2008 7:19 pm April 6, 2008 7:19 pm It was in sometime in the ’80s when I heard someone on the radio talking about Clint Eastwood’s 1980 movie “Bronco Billy.” It is, he said, a “nice little film in which Eastwood deconstructs his ‘Dirty Harry’ image.” That was probably not the first time the verb “deconstruct” was used casually to describe a piece of pop culture, but it was