Darren Wilson, the police officer who shot dead unarmed black teenager Michael Brown has resigned from the Ferguson Police Department, his attorney said, according to Associated Press.
The news agency reported the decision, which comes nearly four months after the fatal confrontation with the black 18-year-old that fueled protests in the St. Louis suburb and across the nation.
Hundreds of protesters have gathered outside the US Embassy in London to voice their disgust at a grand jury decision not to prosecute the police officer who shot an unarmed black teenager dead in the US.
Michael Brown was killed by officer Darren Wilson in Ferguson, Missouri, who will now face no criminal charges.
More than 1,000 demonstrators chanted "jail racist cops" and "killer police off our streets", holding placards reading “Black lives matter”.
The aunt of Mark Duggan, the black teen shot and killed by police in London, sparking nationwide riots, was also there.
Armies of protesters took to the streets following the Ferguson shooting decision, in a sign of the monumental challenge now facing America.
The police officer who shot dead Michael Brown says he has a clear conscience over his actions.