Most food servers get tips from customers when they do the job. All Sadie Elledge got was a xenophobic insult. On Monday, the 18-year-old waitress was working the lunch shift at Jess’ Lunch, in Harrisonburg, Virginia. At one of her tables was a couple that ordered two gyros and a salad. Elledge told WHSV reporter Isabel Rosales that she gave them decent service, but when it came time to pay the $26.11 bill, she found a surprise on her receipt. Instead of a tip, there was a note: “We only tip citizens,” with the signature of one “Ada M. Doriot.”...