The historic preservation movement in the United States originated with the demolition of Pennsylvania Station, a grand and glorious building, to make way for the current Madison Square Garden, a building that could most charitably be described as undistinguished. If I were in an uncharitable mood...well, anyway. Important Modernist architects such as Philip Johnson marched for preserving Penn Station. In general, unlike the 2blowhards, Modernist architects know something about where they came from and mostly recognize the great work of the past.
Is there bad or damaging Modernist architecture? OF COURSE THERE IS. I've seen the Barbican in London; I've shuddered at those Le Corbu towers, so separate from each other and the cities around them, and seen how
But, you know, there's crap in every architectural style. And plenty of Modernist architects in the U.S. live in Modernist houses. (For that matter, as I look over the comments at 2blowhards, I have to wonder if any of these people are aware of Joseph Eichler, a California developer of modest modernist houses derived from FLW that were built for and purchased by middle-class people of modest means. We're talking about houses that sold for $20K-$25K in the 50s and 60s. Eichler, a social as well as architectural progressive, integrated his developments at a time when that could get you picketed, boycotted, etc.)
Updated with Eichler info, Tuesday.