As I understand the WaPo piece, it's talking about the events of Wednesday night, not some "grand context":
Police found dozens of .22-caliber bullets scattered across the Capitol grounds. The occupiers drew chalk outlines of fake dead bodies etched with Walker’s name on the floor, and carried signs that read “Death to tyrants,” “The only good Republican is a dead Republican” and one with picture of him in crosshairs with the words, “Don’t retreat, Reload.”> There were no assassination attempts on Scott Walker
Nor were there any assassination attempts on January 6th.
> the lawmakers were evacuated from the building while the Capitol police were trying to hold back the crowd.
It took me a moment to realize you were talking about Washington, because the same thing happened in Madison: The senators hid under a stairwell, out of view, while the police ordered a city bus to pull up in front of the building. Officers then formed a human wall on the sidewalk, parting the sea of protesters and creating a pathway for the senators to reach the bus. Once the senators were on board, “the mob on the street began punching the windows and shaking the vehicle. … The police told the senators and staff inside to keep their heads down in case a window shattered.”
That, by the way, is what I was talking about when I wrote "forcing lawmakers to flee".
Honestly, it's like the WaPo article and the madison.com article are describing different events, except they aren't, just two perspectives on the same event.