http://www.globeandmail.com/servlet/ArticleNews/TPStory/LAC/20030412/RVWEBB/TPEntertainment/TopStories Hollywood halfwits v. the lynch mob Mad as hell at antiwar celebrities, Americans who support the attack on Iraq are using the Internet to call for boycotts. Some are seeing shades of McCarthyism, SIMON HOUPT writes By SIMON HOUPT Saturday, April 12, 2003 - NEW YORK -- Jon Alvarez is feeling rather pleased with himself these days. Alvarez, 37, is a self-described "average Joe," a Syracuse, N.Y. computer salesman who works hard for every penny, supports his family, and thinks he just may have slain the beast of Janeane Garofalo. You see, Alvarez is mighty upset with what he...