On the second day of deliberations, the jury rejected Guyger's defense that she thought she was entering her own apartment and acted in self-defense against an intruder.
Jean's slaying by a white police officer had provoked street protests, particularly after prosecutors initially opted to charge Guyger with manslaughter rather than murder. Some expressed outrage over the delay between Botham's murder and Guyger's eventual dismissal from the Dallas Police Department.
Botham Jean's mother, Allison Jean, speaks to the jury about her son during sentencing testimony in the 204th District Court at the Frank Crowley Courts Building, Tuesday, Oct. 1, 2019, in Dallas. You know, she testified that she'd heard Jean inside while she was still out in the hallway, and even though she could have retreated and called for backup, she drew her weapon, and she went in and killed him nearly immediately.
The verdict may have defused tensions that began simmering Monday when jurors were told they could consider whether Guyger had a right to use deadly force under a Texas law known as the castle doctrine - even though she was not in her own home.
"I told him, 'I thought we agreed you were going to be a grown up this year?'" Findley recalled.
Brandt Jean said he loves Guyger just like any other person and wants the best for her.
LEE MERRITT: We still have the sentencing phase to go, but this is a huge victory not only for the family of Botham Jean, but as his mother Allison told me a moment ago, this is a victory for black people in America.
For her part, Guyger alleged Jean came toward her and shouted "Hey! Hey!" If she does, though, there will be a lot of people who will wonder whether Guyger gets mercy for being white, being a cop, or being a white cop. This is a conviction rate of just 0.25 percent out of approximately 14,000 killings in that time period. Those powers were granted to Guyger, who then made a colossal, life-ending error in judgment while wielding those powers, with no checks in place to prevent those powers from killing a man.
Sunday is the day when Botham would text his father, Bertrum Jean, and they would exchange information about where they went to church and what they cooked for Sunday dinner.
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Guyger's conviction will likely also help the family of Botham Jean in their civil lawsuit against the city, which is now going through the legal process. She did not immediately report the full details of the incident, he said.
Her conviction carries a sentence from five to 99 years, and she could easily receive a lesser penalty and be home soon.
The prosecution cast Guyger as careless and negligent - armed, distracted and too quick to pull the trigger.
It is relatively rare for USA police officers to be convicted of murder for shooting people they view as suspects. Activists called out the deputy for allegedly treating Guyger like she was the victim as she primped her blond hair after she was convicted of killing a Black man. She was convicted of murder Tuesday.
When she moved to Kilgore with her husband, she was sad to leave her friend, but Jean encouraged her and told her she'd miss every shot she didn't take.
Prosecutors also argued that Guyger did little to help Mr Jean even after realising her mistake, calling the 911 emergency phone number for an ambulance but not administering first aid.
In a statement, Dallas Mayor Eric Johnson thanked the jury for its service in "this unprecedented case".