1) Firing rubber bullets into a crowd that included women and children
2) Allowing "an unrestrained police dog [to lunge] at a group of people that included children."
From the Los Angeles Times:
Anaheim Police Chief John Welter said his department was "very concerned" about an uptick in fatal officer-involved shootings and the outrage that has surrounded the two most recent weekend incidents.
The latest incident -- which resulted in the death of a man Sunday night -- marked the city’s fifth fatal police shooting this year, said Anaheim Police Sgt. Bob Dunn. Last year, there were four officer-involved shootings, compared with six so far this year, he said.
Tensions were high in the Orange County city after the first shooting Saturday, which resulted in the death of a man identified as 25-year-old Manuel Diaz. Authorities said Diaz was shot in the 700 block of North Anna Drive after running from police, but they did not reveal what led to the shooting.
The Orange County district attorney's office — which handles investigations into officer-involved shootings — was called to the scene, but Welter said as police worked to to secure the area, a crowd gathered and “started becoming very vocal and agitated.”
The result was a melee with bottles and rocks thrown at officers, prompting authorities to fire non-lethal rounds and pepper balls to settle the crowd, police said. Television footage of the confrontation showed an unrestrained police dog lunging at a group of people that included children.
One man was bitten on the arm, suffering "small puncture wounds," before police restrained the dog, Welter said. The dog had accidentally gotten out of its handler’s car because a rear window was “not secure,” the chief said.