Sen. Mary Landrieu plans to host a town-hall meeting on healthcare reform later this month somewhere in the river parishes. Bring a helmet. That would be the advice of Democratic congressmen around the country who have been booed, heckled, shouted down and threatened while trying to explain and/or defend their positions on health insurance legislation, particularly the 1,017-page bill that will be on the House floor when lawmakers return from August recess. Republican operatives and conservative talk show hosts have been blamed for or credited with whipping up the masses, but they didn't wholly manufacture the genuine anger, fear and...