"Istanbul (CNN) -- A central square in Istanbul erupted Tuesday night in an unsettling, chaotic chorus, with tear gas canisters and water cannons from police met by fireworks, metal banging and defiant chanting from protesters.
The authorities' tactics caused an ebb and flow of demonstrators from the Turkish city's Taksim Square, with many of them moving onto the abutting Gezi Park.
Riot police surrounded a statue in the middle of the square starting around 10 p.m., even as fires burned around them, but there was little suggestion that the tension was over."