On the fifth night of Turkey’s anti-government demonstrations, Istanbul police used tear gas and water cannon against a fresh wave of protest that erupted after Deputy Prime Minister Bulent Arinc apologized Tuesday for police violence. Arinc is to meet activists later Wednesday. The 250,000 public sector workers of the Kesk trade union confederation Tuesday began a two-day strike in support of the protests and another trade union confederation plans to join. The Turkish Human Rights Association said more than 2,800 protesters had been injured in demonstrations across the country and 791 detained, of whom “around 500” had been released. Two people have been killed in the unrest.