They might be bad people, but they did nothing illegal.No they aren't. They're given a right to peaceably assemble, not plot murder of cops. These guys are the real tyrants, not the govt that the Founders created. If they were in power, then you'd see what real tyranny is.
No, they were planning to protect therepublic (in their mind).Nope, plotting a crime is punishable by law. That's why (for example) undercover cops who seek out sex offenders on the internet can have them charged for trying to arrange sex with minors online (even if they don't actually molest a minor).