Impressive journalisming
Oct 2006: police incl Chauvin shoot & kill a man who'd stabbed others and was attacking them
Nov 2006: Klobuchar elected to Senate
Jan 2007: Klobuchar leaves prosecutor's office, goes to Senate
2008: grand jury declines to charge https://www.theguardian.com/us-news/2020/may/28/george-floyd-killing-officers-derek-chauvin-tou-thao-investigated

2011: Chauvin shoots someone else, in a case where no exculpatory info is given; looks bad

US Senator Klobuchar fails to prosecute.

https://theweek.com/speedreads/916926/amy-klobuchar-didnt-prosecute-officer-center-george-floyds-death-after-previous-conduct-complaints

So the case she was involved in was under investigation when she left, like she didn't just skip all due process and immediately "prosecute" the police after they (apparently) shot a homicidal maniac in self defense... and the 2011 case has nothing directly to do with her.

I don't love Klobuchar and can't confirm that the police's accounts of the 2006 case are true, but by the stories' assumed facts and internal own logic, there's nothing here except that she failed to foresee that this guy would go on to commit worse crimes 5 and 14 years later

err, shouldn't say "worse" crimes because I haven't seen anything that suggests the 2008 grand jury was wrong about the 2006 case. Also don't have any other info on the 2011 case, but this is if we stipulate it was a bad shooting