After 32-year-old Larry Jackson Jr. tried to walk into Benchmark Bank on Friday while it was closed for investigation, police say first a bank manager went out to talk to him and thought he seemed a little suspicious.
So detective Charles Kleinert walked out to talk to him and after a short chat, Jackson ran off -- Kleinert went after him.
Austin Police say there was a physical struggle at 34th and Shoal Creek. That's when Kleinert apparently fired his weapon, killing Jackson.
On Sunday protesters took to the steps of Austin P.D. to protest officer Kleinert's actions.
"He didn't have a backup or partner doing that. I don't think he followed police protocol in what he was doing," said Eric Keto.
Austin NAACP President Nelson Linder says he's sick of this happening to young black men like Jackson.
"We think that APD has been too aggressive in persuing people. We have said before 'Why are you chasing people who have not committed obvious crimes?' We're saying slow things down, gather information and engage people. And practice de-escalation not escalation," Linder said.
Detective Kenneth Casaday is an Austin police officer and he's also a representative for the Austin Police Association.
He says when officer involved shootings happen, there's an internal affairs investigation, a criminal investigation and a possible third civil litigation -- and it affects their life outside of work as well.
"It puts your life on hold. You worry about your well-being, you worry about your family's well being. Is someone going to try to hurt them? Your life is turned upside down, you're taken away from your work environment, just...it's just impossible to describe," Casaday said.
Kleinert has been with the department since 1994.
Casaday says he has known him for years. He says he has never known Kleinert to be in trouble and he's received several accommodations...calling him highly respected in the robbery division of the department.
We also spoke with Kevin Lawrence this weekend. He's the executive director of the Texas Municipal Police Association.
According to Lawrence, the average police officer can work up to 30 years and never have to fire their weapon...himself included.
"Don't rush to judgement. Don't make up your mind that just because you know you hear on the news or you hear a rumor going around that somebody wasn't armed or that somebody didn't pull a gun or...wait until all the facts come out," Lawrence said.
So far the only thing we know about Larry Jackson Jr. is that he has had a lot of run-ins with the law over the years like assault and forgery.
We did reach out to his family who declined to speak about what happened on Friday.