He wrote Het einde van het Jodendom (The End of Judaism) in 2003, which accuses Israel of abusing the Holocaust to justify crimes against the Palestinians. In lectures, he argued that "what is happening to the Palestinians every day under the occupation" was "almost identical" with "what was done to the German Jews even before the 'Final Solution,'" and also maintained that Israel's demeanour is the main cause of the post-war re-emergence of anti-Semitism. 'He was a member of the International Jewish Anti-Zionist Network.

Meyer repeatedly argued that there are parallels between the Nazi treatment of Jews leading to (but not including) the Holocaust, and Israel's dehumanization of Palestinians. At one talk, organized and hosted by the leader of the UK's Labour Party, Jeremy Corbyn, in 2010, Meyer was later reported to have repeatedly likened Israel's actions against the people of the Gaza Strip to the mass killing of Jews in the Holocaust and likened the government of Israel to that of Nazi Germany.

Meyer claimed Zionism predates fascism, that Zionists and fascists had a history of cooperation charging, among other things, that Israel wants to foment anti-Semitism in the world to encourage more Jews to migrate to Israel.

Meyer spoke in favor of the Boycott, Divestment and Sanctions movement against Israel. In his last recorded interview, coinciding with the 2014 Israel-Gaza Conflict, Meyer lambasted Zionists as Nazi criminals, asserted that German hatred of Jews was less deeply grounded than Israeli-Jewish hatred of Palestinians, and denounced PM Benjamin Netanyahu's remarks that demonstrations against the war were evidence of hatred of Israel. He was the first signatory of a statement by 250 Holocaust and descendants of Holocaust survivors protesting that war.