Author Andreas Malm has been denied entry to the United Kingdom on the grounds that his “presence in the UK is not considered to be conducive to the public good,” according to The Guardian and Al Jazeera . Malm was traveling to speak at a conference alongside a co-founder of Palestine Action, a direct action group that the UK classified as a terrorist organization last year.

Best known for his book How To Blow Up A Pipeline , Malm has been a leading authority on climate change for years. He is also a prominent Marxist thinker and has been outspoken in his solidarity with Palestine and his condemnation of Israel’s genocide. Malm is scheduled to be a speaker at next Wednesday’s launch event for the Historical Materialism Conference organized by Tribune magazine, alongside Huda Ammori, a co-founder of Palestine Action.

Before he could head to London, though, Malm was notified by the UK’s Home Office that his Electronic Travel Authorisation had been cancelled.…