But you prepare for the worst. And should have contingency plans and force enough to handle whatever might occur. It sure looked like having more security upfront and/or sufficient backup in riot gear would have stopped this.
Sure.
But you miss all the rest of the story
DC Police, National Guard aspects
Capitol Police were the frontline and most responsible. They reportedly have nearly 2000 officers. They failed at their assigned task. Capitol Police Chief is out.
Are others to blame and did other mistakes occur regarding DC police or national guards or other agencies? Probably. Look into it and hold others accountable.
But first things first. Sort out the Cap Police leadership.
Really, I've always wondered how protected the WH (or Capitol) is from any kind of sustained assault. How many armed police and special forces are there? How quickly can they respond? But say 100 people heavily armed and with tactical ability. Could the WH really handle such an attack? Doubt it.
Or how about a coordinated drone attack.
Say a dozen drones with bomb payloads or dropping grenades?
Wouldn't be much warning once they zoomed over the top of the fence.
With large groups of rioters, there's not much coordination, and so there's time to scurry leaders off to safe rooms and bunkers and such. But a more military style assault, either conventional or automated, or some combination . . .