Due to anti-German sentiment during WWI, an alternative name for a hamburger (which was derived from the Hamburg steak sandwiches eaten on immigrant ships between Hamburg, Germany, and America in the 1800s) was salisbury steak. It was named after Dr. Salisbury who prescribed ground beef for patients suffering from anemia, asthma, and other illnesses.
The same thing happened after 9/11 when there was anti-French sentiment among certain demographics in the U.S. People started calling French Fries "Freedom Fries," instead. Ironically, French Fries aren't even French!