The protesters are back, so too is police action in Gezi Park in Istanbul which was the scene of violent clashes last month.
Gas canisters were deployed to disperse the crowd and close the park which had been reopened just hour earlier.
The closure was due to a protest by the Taksim Solidarity group of political parties and non-governmental organisations. They are opposed to the planned redevelopment of the park which sparked last month’s demos. A Turkish court has cancelled the redevelopment project.
In the main pedestrian shopping street leading to Taksim Square the protest turned ugly. Police opened fire with tear gas on the crowd.
Official figures from the governor’s office say 37 protesters were detained. It is reported one seriously wounded person suffered a brain haemorrhage and was being treated in hospital. Gezi Park has since re-opened.
Monday night’s clashes renewed last month’s tensions which grew into nationwide rallies against Prime Minister Recep Tayyip Erdogan and what critics claimed was his increasingly authoritarian rule.