Hate to burst anyone's thought bubbles here but even if the last witness was problematic - that wasn't my opinion but I wasn't paying super-close attention to the details - it still doesn't detract from the previous witnesses, notably the Chief of police, against whom the defense will have to provide some line of argumentation, which they haven't.

The state doesn't have to prove Chauvin's actions were the deciding factor that killed Floyd, even if it looks likely they were. Guilt can be established through misconduct, and the case seems solid there.