If steering far off (based on Iran's MO in Israel for example) with a little bit of bitcoin and time you can hire someone to do anything for you in a foreign country. This includes graffiti, burning cars, moving weapons and finally assasinations.
Because democracies are so dependent on voters opinions, and organizations that have a vested interest in the failure of a state now have influence, this can be catastrophic (brexit, covid vaccines, race wars)
Can't say I support cracking down on free speech, but IMO that's exactly what we're going to see, especially in Europe where Defensive Democracy is already in place