A British court sentenced a white supremacist to three years and fourth months in prison on Thursday for anti-Jewish incitement, the UK’s Western Gazette reported.

Southwark Crown Court convicted Joshua Bonehill, 23, of disseminating antisemitic material, including an image of weed-killer being sprayed on Jews at a Nazi concentration camp. The self-proclaimed “leader of the fascist movement, the National Liberation,” distributed the material ahead of an “Anti-Jewification” rally he helped organize in July. The demonstration was originally scheduled to take place in Golders Green, a predominately Jewish neighborhood in north London, but was later moved to an area outside Downing Street.

Bonehill was arrested in June and remanded in custody until the start of his trial on Monday. The resident of Yeovil, Somerset, who denied the charge against him, was described in court as “an extremist” who expressed “virulently racist views in respect to the Jewish community,” The Jewish Chronicle reported.

Bonehill has previously called the Holocaust “comical” and “hilarious.” Ahead of the rally in July, he urged for the creation of an “antisemitic coalition,” made up of international antisemites calling for “global action against Jewry.”

Bonehill proclaims on his website that he advocates “white rights, freedom of speech, eugenics and is not afraid to point the finger at the Jew.”