Don’t know about the shooter, but the producer (in blue) definitely is wearing a vest.
So the TV producer was right alongside the shooter, in the bright blue shirt? If I were the investigator I’d be checking if he’s part of an assassination team.
The victim reminds me of a guy that was harassed in Fort Collins at another back-the-blue rally about a month ago. I think this is well coordinated AntiFa “pay-back”, intended to intimidate patriots from showing themselves or expressing their opinions in public. They want to own the streets come November 4, and guys like him are a threat.