People don't pay much attention to history anymore--especially United States history--but it's worth mentioning that the Capitol building was attacked long before the January 6, 2021 riot.
There was the 1954 shooting by Puerto Rican nationalists that left five Congressmen wounded. In 1971, the Marxist group Weathermen Underground bombed the Capitol. As wrong as it was, it's not as though the January 6 breach was something completely foreign to the Capitol's history.
I find myself unable to watch a nano-second of media coverage of the joke "commission" investigating January 6, but this much I can say: Anyone who compares the January 6 Capitol breach to the devastating terrorist attacks of September 11, 2001, owes an immediate apology to each one of the thousands of family members who still grieve the loss of their loved ones on that terrible day. Debra Burlingame, sister of one of the airline pilots murdered on 9/11, explains why in this interview.