It is uncertain when the word began to be used in a pejorative sense by non-Jews, but some believe it started in the 20th century, likely in the 1930s when there was a large population of Jews and Yiddish speakers in East London where Oswald Mosley also had a strong following.[5] Mosley's supporters were said to have chanted while marching through Jewish areas: "The Yids, the Yids, we gotta get rid of the Yids".[6]