Wrong. They weren’t there to arrest Kenneth Taylor. They had no warrant for Kenneth Taylor or Breonna Taylor, but they had a warrant to search the residence because it was adjacent to an ex-boyfriend’s residence.
“The police had been investigating two men who they believed were selling drugs out of a house that was far from Ms. Taylor’s home. But a judge had also signed a warrant allowing the police to search Ms. Taylor’s residence because the police said they believed that one of the men had used her apartment to receive packages. Ms. Taylor had been dating that man on and off for several years but had recently severed ties with him, according to her family’s lawyer.
Ms. Taylor and her boyfriend, Kenneth Walker, had been in bed, but got up when they heard a loud banging at the door. Mr. Walker said he and Ms. Taylor both called out, asking who was at the door. Mr. Walker later told the police he feared it was Ms. Taylor’s ex-boyfriend trying to break in.”
https://www.nytimes.com/article/breonna-taylor-police.html