A member of Irish rap group Kneecap was welcomed by hundreds of supporters as he arrived at a London court on Wednesday, charged with a terrorism offense for allegedly displaying a flag in support of Iran-backed Lebanese terror group Hezbollah.

Liam Óg Ó hAnnaidh, who was initially charged under the Anglicised name Liam O'Hanna and whose stage name is Mo Chara, is alleged to have waved the flag of the banned terror group Hezbollah during a Kneecap gig in London in November 2024.

The 27-year-old was charged in May under the Terrorism Act, under which it is a criminal offense to display an article in a way that arouses reasonable suspicion that someone is a supporter of a proscribed organization.

Wednesday's hearing at Westminster Magistrates' Court is expected to deal with Óg Ó hAnnaidh's argument that the charge was brought too late and should be thrown out, failing which he is likely to formally enter a plea.

Belfast-based Kneecap, who rap in Irish and English and regularly display pro-Palestinian messages during their gigs, previously said the flag had been thrown on stage and described the charge as an attempt to silence them.

A person holds a sign in protest against Israeli Prime Minister Benjamin Netanyahu, as supporters of Kneecap member Liam O'Hanna, also known as Liam Og O hAnnaidh and performing under the name of Mo Chara, hold placards outside the Westminster Magistrates' Court, in London, Britain, August 20, 2025.
A person holds a sign in protest against Israeli Prime Minister Benjamin Netanyahu, as supporters of Kneecap member Liam O'Hanna, also known as Liam Og O hAnnaidh and performing under the name of Mo Chara, hold placards outside the Westminster Magistrates' Court, in London, Britain, August 20, 2025. (credit: REUTERS/Isabel Infantes)

Uniting Northern Ireland with Republic of Ireland

The group – who rap about Irish identity and support the republican cause of uniting Northern Ireland with the Republic of Ireland – have been increasingly vocal about the war in Gaza since Óg Ó hAnnaidh was charged.

Kneecap led a 30,000-strong crowd at Glastonbury Festival in June in chants against Prime Minister Keir Starmer and accused Israel of committing war crimes in Gaza, which Israel denies.