Authorities are pleading for calm while activists are vowing to fight on in Kentucky's largest city after a gunman wounded two police officers during anguished protests over the decision not to charge officers for killing Breonna Taylor.

A new round of demonstrations in U.S. cities was set off by outrage over a grand jury's failure to bring homicide charges against the officers who burst into the Black woman's apartment six months ago.

The state attorney general said the investigation showed officers were acting in self-defence when they responded to gunfire from Taylor's boyfriend.

Louisville Mayor Greg Fischer insisted Thursday that violence won't cure his city's pain.

26 year old Larynzo Johnson faces charges of shooting at two police officers

An arrest citation says video has been recovered that shows 26 year old Larynzo Johnson shooting at two police officers who were wounded during protests in Louisville over a grand jury's decision in the fatal shooting of Breonna Taylor.

The citation says Johnson was among a crowd in downtown Louisville that had been told to disperse after setting fires and causing property damage.

The citation says Johnson intentionally fired multiple times at officers, hitting two of them.

Johnson has been charged with two counts of assault on a police officer and multiple charges of wanton endangerment of police officers.

Interim Police Chief Robert Schroeder said the two officers are ``doing well and will survive their injuries.''