What statement did Paul Robeson make that particularly infuriated anti-communists in the US?

Paul Robeson infuriated anti-communists in the U.S. by stating that he felt more at home in the Soviet Union than in America, particularly due to the pervasive racism he experienced in the United States. His vocal support for communism and criticism of American policies, especially regarding civil rights, led many to view him as a controversial figure and a threat during the Red Scare. This sentiment was exacerbated by his connections to leftist movements and his outspoken advocacy for social justice.