WASHINGTON (Reuters) - About 150 protesters sat in front of the White House on Monday to savor their last meal before starting a hunger strike that some said will continue until American troops return from Iraq. The demonstration marking the Independence Day holiday was organized by CodePink, a women's anti-war group that called on volunteers to abstain from eating for 24 hours from midnight on Monday. Some protesters said their fast would continue beyond July 4th. Anti-war activist Cindy Sheehan, whose son was killed in Iraq, said she would drink only water throughout the summer, which she said she would...