Let's not mince words. Insurrection means violent uprising against the government. Attacks on public servants and public buildings for the purpose of overthrowing the government are insurrection.
The Portland courthouse siege- OP's chosen example- was led by violent white anarchists. Their motive was to topple the government. Portland's Black Lives Matter activists complained many times that their cause and movement had been hijacked [0][1][2].
The people who invaded the capitol today, at least some, probably thought they were protecting democracy. They may have thought they were defending election integrity. They were wrong. That doesn't mean they are evil or amoral. It means they are misinformed and misled. Using them as a foil to downplay other, much more violent unrest is neither helpful nor informative.
I haven't seen photos of armed rioters in the capitol. If you have some, please link them.
[0] https://www.kgw.com/article/news/local/professor-focus-of-po...
[1] https://komonews.com/news/local/black-people-in-portland-str...
[2] https://www.latimes.com/opinion/story/2020-09-04/black-lives...