Original sentence: McGowan takes a pro-Hitler stance on the Nazi Holocaust, claiming that Ernst Zundel is not a Holocaust denier but a Holocaust "revisionist" and that Holocaust deniers aren't necessarily anti-Semitic but may be victims of Zionist lobbying
Edited sentence: McGowan claims that Ernst Zundel is not a Holocaust denier but a Holocaust "revisionist" and that Holocaust deniers aren't necessarily anti-Semitic but may be victims of Zionist lobbying