The family of the unarmed black teenager shot dead by a police officer in Missouri has hired lawyer Benjamin Crump, who represented the family of Trayvon Martin, a black Florida teenager who was also unarmed when he was shot in 2012.
Michael Brown's family also appealed for an end to the street violence after rioting broke out in St Louis overnight.
Hundreds gathered today outside police headquarters in Ferguson, the area of St Louis where Brown, 18, was killed, to stage a peaceful protest, although four arrests were made.
The race of the officer who shot Brown has not been revealed. The 53-strong Ferguson force has just three black officers, while two thirds of the area's residents are black.
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A charity has warned of a "pressure cooker environment" in schools putting children's mental health and self-esteem in danger.
The twin brother of the police officer shot and blinded by gunman Raoul Moat says his family are still waiting for justice five years later.
The success of the No camp is mainly due to Tsipras convincing people a No vote will strengthen their hands in negotiations.