When I first moved to this area ** years ago, I was amazed that people took for granted the ability to get The Washington Post daily. (I was from way out in flyover country, where you could get a mail subscription with a three-day lag — or go to a downtown newsstand where you could get today’s Post. Of course there was no internet.) And yet, here The Post was, right on my doorstep every morning. I had long admired its coverage of national affairs and its willingness to stand up to powerful people like the Nixon administration. The Graham family understood The Post’s importance in national affairs. Now the paper is being sold to an internet entrepreneur. I fear that we may be seeing the death of a valuable national institution.