In the only two examples I’m somewhat familiar with (John Lennon and Ronald Reagan), when someone’s mental illness led them to attack a public figure, the trigger wasn’t anything nearly as obvious as an incitement to violence, or even criticism of the public figure. Unpredictable people are unpredictable; trying to foresee what might set them off is pointless.
In the only two examples I’m somewhat familiar with (John Lennon and Ronald Reagan), when someone’s mental illness led them to attack a public figure, the trigger wasn’t anything nearly as obvious as an incitement to violence, or even criticism of the public figure. Unpredictable people are unpredictable; trying to foresee what might set them off is pointless.