You’re not going to deter the die hards. You absolutely will deter the “normies” with mortgages and retirement accounts to lose (I’d say their families acceptance, but they don’t seem to care much about that).
No one is suggesting you arrest those who stayed outside. You arrest however many you can find who blew past doors/security or took stuff. Probably 500.
At the next Trump rally of 100k everyone will know not to break the law. It is pretty simple.
I think it's reasonable that people who were involved in actual violence or theft should face consequences.
When you say it's pretty simple, others are calling for everyone on the Capitol grounds to be arrested. Technically they were breaking the law by trespassing.
I've got an idea, you take people with unapproved ideologies or from communities that tend to have these people and put them in reeducation facilities. Because this is all expensive to do, they will need to work as well.
Sarcasm aside, we are moving quickly to a straight up authoritarian apparatus of state sanctioned discourse enforced by a handful of corporations. This will be used against _anything_ that challenges those in power or goes against the approved narrative. For those cheering this on, realize this will applied to you in one form or another with no recourse. Here are a few scenarios off the top of my head: being a pacifist or home schooling advocate, posting on social media something tacky like "Prominent figure X is a fat idiot", or personal medical decisions having a direct impact on your ability to: travel, access jobs, housing and financial systems.