That doesn't matter. She presented a threat inside a government building. Not just any old building either. She was part of an angry mob who had already illegally broken into the building, with a damn good portion of the most important government officials inside the building. Everyone else is very lucky that they didn't get the same treatment.
Take the mob away. Imagine she was a lone nut and tried do that by herself. If she somehow managed to get past the security on the outside, without getting tackled, beaten and arrested...or shot, guess what chances they'll be taking inside the building? Zero. Your ass has red dots all over it.
You don't break into a highly secured government building, where they put middle school children through metal detectors on field trips, to check for potential threats. You are in no fuckin' around town. All bets are off when you cross that line.