On January 20th 2005, massed leftwingers blocked streets and Metro exits effectively preventing me and thousands of other from actually getting to the Capitol to view the Inauguration of
george W Bush
I remember that day very well. The protesters were everywhere, especially blocking the security entrances and seemed threatening though my sister and I did finally get through.
It was much worse for Trump's inauguration. The protesters were rioting in various places in the city and were threatening to anyone trying to get to the security checkpoints, whose number the outgoing Obama/Biden administration had reduced to make it more difficult for Trump supporters. I did not even try to go, but I know people who did and finally gave up trying to get onto the mall.