Kita Thomas-Smith has expressed outrage at Harris County law enforcement in Houston, Texas, after a sheriff's deputy shot dead her brother Danny Ray Thomas, 34, who was unarmed.
Dashcam and phone footage captured the moment a Harris County sheriff's deputy confronted Mr Thomas who was walking around in the middle of the busy intersection with his pants down.
The police report claims Mr Thomas struck a white vehicle, which prompted the driver to get out and engage in an "altercation".
Dashcam footage from the deputy's car captures this altercation before Mr Thomas starts walking towards the deputy.
The sheriff's deputy repeatedly shouted: "get down on the ground".
As the subjects moved off camera, gunshots can be heard as the policeman fired his weapon and killed Mr Thomas.
Both the officer and victim were black.
Mrs Thomas-Smith said her brother was a loving father and brother, but was dealing with a family tragedy as his wife was awaiting trial for allegedly killing his children, according to the Houston Chronicle.
"I’m speaking on behalf of police brutality," Thomas-Smith said at Houston City Council.
“My brother was not armed, not trying to harm and possibly, he just wanted someone to help him.”
Mayor Sylvester Turner said it was vital transparency and training was provided.
"I certainly feel your pain. We are certainly sorry for any life that is taken," he said.
Harris County Sheriff Ed Gonzalez said the deputy sheriff was armed with a taser during the incident.
The incident occurred last Thursday when the sheriff deputy was passing by the intersection when he spotted Mr Thomas stopping vehicles, according to the Houston police report.
"Fearing for his safety, the deputy discharged his duty weapon, striking Thomas once in the chest. He was then transported to the hospital by HFD paramedics," the police report reads.
The incident is being investigated by the Harris County District Attorney's Office and the Homicide Division.
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