Little Hawk that's what it has always ment. It was coined by Marr to mean anything against Jews. Applying it to any other group is the wrong usage. Find a different one. Marr was a believer in the psuedo-scientific Darwinistic theories of race that were popular in the 19th century (and ever since). Ethnic Jews, were classified as the lowest, most insidious kind of Semites. Arabs didn't enter the picture.
Children can be very prejudicial against people who are different, unless they are exposed to it over time.