Six people have been charged with violent disorder after police were attacked with petrol bombs on a Nottingham housing estate.
Officers said up to 30 people set fire to cars and skips and vandalised fences on the city's Bestwood Estate.
It is understood the protest was linked to the jailing of three Nottingham men who plotted to murder Joan and John Stirland at their bungalow in Lincs.
About 200 officers were called in to the disturbances on Saturday night.
Police dogs and officers on horseback sealed off a road as the problems continued for three hours.
No-one was injured in the incident.
The six people facing charges - two men, a women, and three teenage girls - are understood to be local.
Officers described the incident as "extremely rare".