Static observation based on a single photo; I don’t want you on the stand open to cross examination ...
A) Were the barricades fully deployed
B) Were the barricades in the process of deployment
That picture is frame capture from the video.
In that picture, the barrycades appear fully deployed, though later in the video you can see that they are controlled in sections. You can see them let the barrycades down on the near side of the street to let an uninvolved vehicle get through.
It certainly appears that the section that the cop hit was fully deployed when he/she hit them.
What can’t be determined from the video was whether the cop truly had enough time to react to their deployment. It’s clear, however, that he/she made no effort to stop. Under hard braking, you would see the front end dip and the rear end rise as the car’s weight transfers forward. You don’t see that.
If you watch competent LEOs in emergency mode (lights/siren), you will observe that they do approach intersections with extreme caution to avoid possible cross traffic. People are supposed to stop dead to let the cop through, but they don’t always do that.
My conclusion is that this Kapitol Kop was on a thrill ride, maybe their first ever, and wasn’t exercising the level of responsibility and caution that the job requires.