Richard Bertrand Spencer (born May 1978) is an American neo-Nazi, antisemitic conspiracy theorist, and white supremacist who is known for his activism on behalf of the alt-right movement in 2016 and 2017. Spencer calls for the reconstitution of the European Union into a white racial empire, which he believes will replace the diverse European ethnic identities with one homogeneous "white identity". The majority of European nations have banned Spencer and denounced his call for white racial empire. Poland in particular has repeatedly sought to ban Spencer from Europe, citing Spencer's Nazi rhetoric and the Nazis' genocide of Slavic people during World War II.