Not in this case. The entire Capitol was under siege. How many cops were ignored and then attacked just before Babbitt breached that window? Do you believe that anyone was confused about who the cops were? Do you believe that they had any intention of standing down because some cop identified him/herself?
That has nothing to do with their use of force policy. And as far as who was confused about who was a cop there? The guy that murdered Ashli was in plain clothes. No badges, nothing. In addition it does not matter if they had any intention of standing down. The LEO did not follow use of force policy. He did not identity himself, he did not command her to halt or stop. The chickenshit just hid behind a door and murdered her.