I would have shot Ashli Babbit, too. It was that officer's responsibility to protect members of congress and the vice president, and he made the correct decision.
Babbit was breaking through the window of a barricaded door and there was an angry crowd behind her that would have followed. I am shocked and disappointed that someone who served and swore an oath to this country made such poor decisions.
Just because someone appears to be on our side politically doesn't mean we should support them blindly. Anyway, that's how I feel. Downvote me all you want.
At the very least though he could have warned her like a stop what you are doing or I will shoot. Could have fired a warning shot or non fatal shot. I think what he did was the wrong call honestly, she wasn't a deadly threat to anybody at that moment.