AI's approach: * User has history of anti AI rhetoric, increasingly agitated and unstable. * User has removed all phones and cellular connections from their car. Increase monitoring through surveillance cameras and monitoring of their social groups. * User has been spotted making unusual travel choices moving towards key infrastructure - deploy interception measures.

We already have the tech to do all of that. A rifle isn't going to help against AI. Or for the linesman:

* Employee required for critical infrastructure has been identified to hold unaligned political beliefs. Replace with more pliable individual and move to low impact location.

No one who wants to bring down an AI like this would ever be able to get close to it, even if it lived in only one data center. You could try hiding all your communications, but then it will just consider you a likely agitator anyway. That's the risk of unaccountable mass surveillance (the only kind that's ever existed). Doesn't really matter if there's a person on top or not.