In December 2004, Gurpreet Kaur Bhatti’s play Behzti (Dishonour) caused riots when it was staged at Birmingham Rep. It concerned the (fictional) story of a child rape in a gurdwara (a Sikh temple) and the theatre, in a well-intentioned but misguided act, invited local Sikh leaders to a preview. They asked for changes to be made (relocating the play to a community centre), Bhatti refused, the play went ahead as she wrote it, riots ensued and violent threats were made. She went into hiding and the play was cancelled after just a few performances.

The way the pundits were jumping up and down hailing a historic night in British politics, you'd think nobody had ever seen Nick Clegg, David Cameron and Gordon Brown on TV before. This, we were told, could be a historic 90 minutes that would transform our nation's political discourse. "The leaders' debate will be a direct confrontation with the voters that could change the election", according to a man wearing glasses in The Times.

Roman Polanski's vice-like paranoid thriller received its world premiere in Berlin in February amid the Chilcot inquiry and headlines about MI5's complicity in torture at Guantánamo Bay, and its topical echoes will rumble on uncomfortably (for some) in the run-up to next month's UK elections.

Laurie Anderson's new show Delusion opens at the Barbican in London next week. Since the late 1960s she has been at the forefront of artistic innovation. From early pieces where she appeared in art galleries (wearing ice-skates in a block of ice that slowly melted), to her epic opera United States I-IV, she has carved out a niche as something between a poet, artist, technician, humourist, pop star and magician. We chatted over a coffee for breakfast in Paris last week, after I had seen Delusion the previous night.

Richard Hamilton, the true father of Pop art and spiritual descendant of Duchamp, is not a particularly prolific artist. Rather, he sticks to an idea and works on it over several editions and in different media, so that we get a large body of work repeating the same image in paint, in collage, in photography and in mixed media. For Hamilton, now 87, in so much of what he has done over the decades the key idea cannot be conveyed by a single unique work of art, because the key idea is often to do with the multiplicity of images: in other words, the medium is the message.

Imagine if Rory Bremner had been banned from British television for the past 20 years, and Gordon Brown had put pressure on the BBC to get rid of Question Time because it had been critical of him. In the Italy of Silvio Berlusconi these things happen.