Minneapolis school shooter left manifesto, video, planning docs, so why are police saying they don't know the motive?

Roundup of Audacy talk hosts on the Minneapolis school shooting: Get the latest on the school shooting during a Mass at a Catholic school, with firsthand accounts of a dad running in alongside police, a kid who saw his friend shot, and expert analysis. But why are leaders going so far out of their way to not admit the killer's motive? Tara Servatius and Marc Cox have thoughts on that. Plus Chad…