Yes, and no. While, Polak ethnic slurs came later, being not widely publicized to at least the 1960's from the Liberal comedians, Liberal media, and Liberal Hollywood (Jews) While, it is true that Germans did in fact face mass discrimination in the World War periods in this country. It's a far cry to say that the World War period is when anti-White ethnic-slurs started. So, terms like WOP against Italians, or Mick against Irish weren't around longer? I'd tend to think they were. Actually, the first major group of Whites to experience discrimination in this country, were Irish Catholics like in the Philadelphia Nativist Riots, among other. Also the biggest total numbers lynching was in Louisiana against Italians, rather than Blacks. This also pre-dates WW1.