Dembina has attracted attention for his anti-Zionist and socialist views. In 2004, while on his way to perform stand-up comedy in Israel and the West Bank, Dembina was detained for several hours by Israeli police at
Ben Gurion Airport after his name reportedly appeared on a list of "known radicals". In 2008, Dembina organised a comedy event called "60 Years: What A State" on Israel's independence day,
Yom Ha'atzmaut. Featuring
Jeremy Hardy,
Mark Steel,
Reginald D Hunter and
Shazia Mirza, it was on the same evening a gala event organised by the
Zionist Federation at the Wembley Arena celebrated 60 years of the Israeli state. He branded the gala's headliner, American comedian
Jackie Mason, a "bad Jewish joke", citing Mason's support for Israel and that comedian
Ray Hanania, of Palestinian descent, had been dropped from supporting Mason on tour in 2002. Dembina said: "Never mind Israel not wanting to share Jerusalem with Palestinians, he won't even share a stage with one." In 2011, Dembina threatened legal action and called for an investigation after a protester interrupted his Edinburgh Fringe preview show at a Jewish community centre in Golders Green, accusing him of performing a "tame version for a Jewish audience" and demanding that he reveal his anti-Israel views. Ivor said afterwards: "In 25 years in Jewish comedy, during which I have performed both in Britain and abroad—including in Israel—this is the first time someone has attended a performance of mine with the apparent intention of sabotaging it." In 2014, Dembina caused consternation among sections of the Jewish community for organising a benefit show for the people of the
Gaza Strip with
Daniel Kitson,
Josie Long and fellow Jewish comic
Andy Zaltzman. Also in 2014, he angered some other Jewish comedians by banning them from his club because they publicly endorsed and received payment from the
Jewish National Fund. In February 2015, he joined 700 other UK artists including
Brian Eno,
Mike Leigh and
Liz Lochhead as a signatory to a
cultural boycott of Israel. In 2015, Dembina also attracted the interest of the political community for his willingness to use sensitive subjects such as the Holocaust, Israel and Jewish stereotypes in his material. Dembina is a
Labour Party member of the
Vauxhall Constituency Labour Party. In April 2016, he was one of 82 Jewish members and supporters of the
Labour Party and of
Jeremy Corbyn's
leadership who wrote an open letter to
The Guardian stating that they "do not accept that antisemitism is 'rife' in the Labour party" and that "these accusations are part of a wider campaign against the Labour leadership, and they have been timed particularly to do damage to the Labour party and its prospects in
elections in the coming week." ==Notable performances and tours==