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Many of the letters that are so upset about this column/article amount to "fingers in the ears/la la la/I can't or don't wanna hear you" whining.
About the only way I know of to gain an understanding of someone else's point of view is to listen to and engage their arguments. Telling people you don't agree with to essentially STFU is not very productive. It smacks of the small mindedness I used to think was confined to rightwingnuts. Apparently, that sort of thing (the desire to shut out opposing points of view and act authoritarian) crosses party lines.