A wave of demonstrations and civil unrest in Turkey began on 28 May 2013, initially to contest the urban development plan for Istanbul's Taksim Gezi Park. The protests were sparked by outrage at the violent eviction of a sit-in at the park protesting the plan. Subsequently, supporting protests and strikes took place across Turkey, protesting against a wide range of concerns at the core of which were issues of freedom of the press, of expression and of assembly, as well as the alleged political Islamist government's erosion of Turkey's secularism. With no centralised leadership beyond the small assembly that organised the original environmental protest, the protests have been compared to the Occupy movement and the May 1968 events. Social media played a key part in the protests, not least b