Hip hop Irish trio Kneecap is being investigated by UK counter-terrorism police after videos emerged allegedly showing the band calling for politicians to be killed and shouting “up Hamas, up Hezbollah.

In an open letter organised by Heavenly Recordings, Kneecap label, artists such as Massive Attack, Paul Weller and more say that “in a democracy, no political figures or political parties should have the right to dictate who does and does not play at music festivals or gigs that will be enjoyed by thousands of people.”

The Metropolitan Police's counter-terror officers will investigate online videos showing rap trio Kneecap calling for the death of British MPs and shouting "up Hamas, up Hezbollah