Is that really the test that you're applying? Interesting. Because I would argue that the test is whether the passenger was or was not engaging in a constitutionally-protected exercise of an inherent right. Again, referring to my hypothetical "F*** the TSA" jacket, it doesn't much matter whether it raises your blood pressure to the point where you become apoplectic and collapse on the spot. My right to wear that jacket is absolute, at least in the context of a checkpoint in an airport.