Security's been stepped up in Missouri as rioting continues into a second night following the decision not to charge a white police officer who shot dead an unarmed black teenager.
Last night the police officer at the centre of the case, Darren Wilson, said he could not have done anything differently to prevent the death of Michael Brown.
The officer was told on Monday he would not face charges and in an interview with ABC News last night said he has a “clean conscience”.
US President Barack Obama says he has no sympathy for people who have used what happened as an excuse for violence, but he will work to make sure law enforcement in the US is fair.