I frankly can't bring myself to care. I've never owned a gun in my 53 years, probably never will, dislike cops in general and think their blue wall bullshit is out of control. Yet when these fucking white supremacist insane people take it upon themselves to attack government buildings--over complete, and utter bullshit!--I really don't care if they get mowed down, other than the mental anguish it might put on those doing the mowing. Any sane person part of an armed mob attacking an important government building should expect to be met with force. The secret service is no joke and they are not going to wait around to see if you are an ok guy just because you have a buffalo headdress on. Any incursion into the Capitol should be considered a hostile force, period, no matter how fucking fat and ridiculous they look.
These people are nutters. Dangerous nutters. They are extremists as much as the jihadists blowing themselves to get into heaven to sleep with 1000 virgins or whatever the fuck they think. (Thankfully, our fat and happy version of jihadists don't tend to have the whole self-sacrifice propensity like their Muslim brethren....)
Well, if someone gets through the perimeter and can't be subdued, then yeah - I wouldn't be surprised if some got shot. Hopefully, with more police/guardsmen, that will be impossible. If they start throwing flash bangs and Molotov cocktails into the perimeter; they should be put in a world of hurt. I'd prefer to project force with armed men and equipment to deter these idiots. I'd be okay with a few of these in strategic positions: