Since the 1990s, David Icke has been spreading a conspiracy theory that claims that humanity is secretly ruled by aliens dressed as reptilians powered in part by the Jewish Rothschild family.

A Jewish organization in the Netherlands has asked the authorities of the city of Amsterdam to forbid British conspiracy theorist and Holocaust denier David Icke to address a public rally organized on November 6 on Dam Square in Amsterdam by an anti-establishlment group.

Centrum Informatie and Documentatie Israel (CIDI) has called for a demonstration against Icke’s venue ‘’in order to avoid giving the spread of his hatred, plots and anti-Semitism a chance.’’

The muncipality of Amsterdam said that Icke’s arrival is “very undesirable,” and that it has asked the immigration office to investigate whether he can be refused entry into the country.

According to the municipality, Icke has made anti-Semitic statements in the past that are “unacceptable and deeply hurtful.”

The municipality said it has no intention of interfering with the content of the demonstration.However, the Public Prosecution Service can act if Icke is deemed to have committed a criminal offense during his speech. “Any speech will be closely monitored by the public prosecutor to assess whether criminal statements are being made.” Public order surrounding the demonstration will also be monitored, the muncipality addeds. The prohibition of censorship and freedom of expression are  deeply rooted in the Dutch constitution:

Since the 1990s, Icke has been spreading a conspiracy theory that claims that humanity is secretly ruled by aliens dressed as reptilians powered in part by the Jewish Rothschild family