Milwaukee Police Department
Milwaukee Police Chief Alfonso Morales oversaw several ethical violations among his staff before he ordered his officers to fire tear gas at protesters.
“This is a tragic day for our city, for our state,” Milwaukee Mayor Tom Barrett said.
The boy and girl, ages 12 and 13, were hospitalized for non-life-threatening injuries, Milwaukee police said.
Milwaukee police arrested a 61-year-old man in what they are investigating as a hate crime.
The Milwaukee Bucks guard subsequently filed a civil rights lawsuit over the 2017 incident.
The NBA player was tackled to the ground and tasered after parking his car across two handicap spaces.
One police officer is heard saying he expects a "media firestorm."
Police Chief Alfonso Morales said officers “were recently disciplined,” without providing details.
Milwaukee is the most segregated metropolitan area in the country.
Hamilton was unarmed when he was shot dead by police in Milwaukee in 2014.