Antisemitism in the United States has been a problem for Jewish Americans for centuries. Antisemitic occurrences have been on a generally decreasing trend in the last century consistent with a general reduction of socially sanctioned racism in the United States, especially since World War II and the Civil Rights Movement. Cultural changes from the 1960s onward into the 21st century have caused a large shift in general attitudes such that, in recent years, most Americans surveyed express positive viewpoints regarding Jews.