Minnesota has specific jury tampering law. Maxine Waters broke this law, the AG of Minnesota is obligated by oath to prosecute those that break this laws, and if they don't, they too are breaking the law.
Will this happen? Probably not. That's the big problem, and if the officials hired to prevent such thuggery don't do so, the citizens will eventually either leave, or take the law into their hands. Peaceful citizens will put up with a lot, but not forever.