Pc Ben Hannam, 22, had also pleaded guilty to possession of a prohibited photograph of a child.
The male officer was not charged or suspended over the 2017 allegations.
Genevieve Hansen told the court what she would have done to help George Floyd as police officer Derek Chauvin knelt on his neck.
Ten people, including a police officer, were killed when a gunman opened fire at a King Soopers store in Colorado on Monday.
Police say the suspected shooter is in custody after the shooting at King Soopers that left multiple dead, including one officer.
The Bristol demonstration against increased police powers turned violent, resulting in officers being injured and seven arrests.
Dubbed ‘Project Vigilant’ the programme can involve officers attending areas around clubs and bars undercover.
A serving police officer has been arrested on suspicion of murdering the 33-year-old marketing executive.
PC Simon Read faces a misconduct hearing over the alleged incident at Tesco in Cambridge.
The family had not been able to see their elderly relative for nine months.