Completely messed up. Sounds like another mentally ill criminal.
https://www.bbc.com/news/world-us-canada-59378571
"The Milwaukee Journal Sentinel newspaper reported Mr Brooks is currently
facing at least five criminal charges - including for domestic abuse
and battery - and had been released from jail on bond just two days
earlier.
...that the suspect is believed to have been fleeing another scene - possibly a knife fight - when he ran into people at the parade."