As tourists lined up to snap photos of the "Welcome to Fabulous Las Vegas" sign Monday morning, many noticed something amiss. Red graffiti was scrawled on the famous landmark, defacing the main face and one of its structural legs. Cameron Randall and friend Kevin Daniels, visiting from North Carolina, noticed it right away and were disappointed someone would damage the popular tourist attraction. "It's kind of sad someone would vandalize something like that," Daniels said. "It's the entrance to the city and everything." The Young Electric Sign Company owns the sign and leases it to Clark County, county spokeswoman Jennifer...