April 21, 1006 — In one of those odd political moments that combine a poignant message with somewhat opportunistic maneuvering, Democratic National Committee Chairman Howard Dean took part in a cleanup effort in flood-ravaged New Orleans and used the moment to take a shot at the Republicans. In his first post-Katrina visit to the Crescent City, Dean helped Acorn, a nonprofit community group that works with low-income families, to clean out Vincent Cooper's flood-damaged home on Derbigny Street in the Lower Ninth Ward in New Orleans. "I don't want to be partisan at a time like this, but this is...