

Probably because they wouldn’t have bothered use forged credentials and a lookalike cop car? In any case the shooter has been identified as Lance Boelter (still at large) and apparently is actually not a cop. He was a Walz reappointee a government Workforce development committee until 2023, but supposedly now is an employee of a private security firm.
Apparently leadership at Praetorian Guard Security Services
“Dr. Vance Boelter has been involved with security situations in Eastern Europe, Africa, North America and the Middle East, including the West Bank, Southern Lebanon and the Gaza Strip. He brings a great security aspect forged by both many on the ground experiences combined with training by both private security firms and by people in the U.S. Military. He has worked for the largest U.S. oil refining company, the world’s largest food company based in Switzerland and the world’s largest convenience retailer based in Japan.”
“Vance has focused all this experience to make sure Praetorian Guard Security Services covers the needs you have to keep your family and property safe.” https://www.pguards.net/leadership-team