Turkey Protests: Unions Strike In Support Turkey's public sector workers union says its members will hold a two-day strike to protest against what it called "state terror" against anti-government demonstrations. The strike, starting on Tuesday, comes as the fourth day of mass protests continued in Istanbul and Ankara. Sky's Katie Stallard said tens of thousands of people had gathered again but were largely peaceful. The strike by the 240,000-member Confederation of Public Workers' Unions (KESK) is likely to affect schools, universities and public offices throughout the country. "The state terror implemented against entirely peaceful protests is continuing in a way that threatens civilians' life safety," KESK said in a statement on its website. There were clashes between hundreds of students and riot police in the Turkish capital of Ankara after a weekend of anti-government demonstrations across the country. Students took to the streets of the Turkish capital Ankara on Monday Police tried to disperse the protesters with tear gas and water cannon as Monday morning commuters attempted to dodge clashes on their way to work. Bandana-clad youths ran at and kicked shop barriers, which were already covered in graffiti, as a local businessman tried to prevent the destruction. Ordinary Turks tried to go about their business wearing masks as tear gas rose around them. Protesters had clashed with riot police into the early hours of Monday with some setting fire to offices of the ruling AK Party. It has also emerged that a 20-year-old named as Mehmet Ayvalitas was killed when a taxi ploughed into a crowd of protesters in Istanbul on Sunday. It is the first known death related to the demonstrations. Huseyin Demirduzen, of the Union of Turkish Doctors, said four other people were injured, one of them seriously. Prime Minister Recep Tayyip Erdogan has called for calm, urging people not to be provoked by demonstrations. Taksim Square was littered with damaged cars on Monday He says there is no "Turkish Spring" in his country and that protests being carried out by "extremists" will soon be over. But President Abdullah Gul struck a more conciliatory note, promising the anti-government protesters that their message had been "received." Mr Erdogan, who is now in Morocco as part of a four-day official trip which also takes in Algeria and Tunisia, has admitted "mistakes" by the police in their initial response. Clashes between protesters and police firing tear gas and using water cannon that started on Friday in Istanbul's Taksim Square spread to some 67 cities on Sunday. Some 1,700 people were arrested nationwide but most have now been released, according to Interior Minister Muammer Guler, who estimated the cost of the protests so far at more than 20 million liras (£6.55m). Taksim Square in Istanbul became the flashpoint after a local outcry against plans to redevelop Gezi Park near Taksim turned into a platform for anti-government anger. Prime Minister Recep Tayyip Erdogan called protesters a 'bunch of vandals' The days of protests have been the biggest outburst of anger at the Islamist-rooted government since it took power more than a decade ago. Overnight, police fired tear gas and water cannon at protesters who marched on Mr Erdogan's offices in Istanbul and in the capital Ankara. Dictator, resign! ... We will resist until we win," yelled the crowds, who hurled stones and lit fires in the streets. The flashpoint shifted late on Sunday to the Besiktas area north of Taksim, near Mr Erdogan's Istanbul base. Groups including Amnesty International and Human Rights Watch have denounced the police reaction as excessive and Turkey's Western allies have appealed for restraint. The Foreign Office has advised British tourists to avoid the demonstrations. It also advises against all but essential travel to parts of the country that are close to the Syrian border, and warns of a "high threat" from terrorism.