But the core of the issue is that we are shunning them, as we have shunned many other groups too closely connected to violent motivations.
The only difference between now and then is that this brand of terrorism is homegrown, so the 'suffering' of the white supremacists is more visible to us.
One thing to note is that unlike say no-fly lists, no one is targeting individuals, just the organization. These people could dissolve their group, wait one month, and start a new company that no one would ever think to ban. These people could also similarly act as individuals within the system, without any blowback. It's only when they congregate under a clear, acknowledged banner of hate that any penalties come into place.
No this is wrong, this means that you've established a system that when it is in agreement with what you personally believe to be justice it delivers quickly upon them, but when it does not it works against you and/or justice with the same efficiency.
You are basically advocating for a Judge Dredd philosophy.
We need to follow our judicial system otherwise we are no better than them.
Now if no bank is willing to let them have an account… That would be interesting. But I imagine there has to be at least one. Heck, they can start their own.
I wonder if the big credit card and it works (visa, MC) might start doing this kind of thing too. That would be a real blow, and might start to be illegal (collusion? IANAL, obv).