A silent, standing protest by performance artist Erdem Gunduz has been taken up by hundreds of anti-government demonstrators and spread to several Turkish cities.
Mr Gunduz appeared in Istanbul’s Taksim Square at around 18:00 (15:00 GMT) on Monday and remained there until 02:00 when police moved in.
His protest quickly captured the imagination of the protest movement. The hash tag “duranadam” (“standing man”) dominated Turkish-language Twitter on Tuesday morning.
Hundreds of people in Istanbul and Ankara took up the protest on Tuesday.