I wouldn’t be shocked to see it either, but the fact that that sort of act has happened so little, especially when contrasted with the frequency of mass shootings, is very telling. All that pessimism in a large population with so many guns that you mention has so far tended to find an outlet in the murder of easy targets, either random people or the already oppressed. There may be some great paradigm shift where the powerful become common targets of “political violence” and frankly , but as of right now, it’s still the safest bet that these people will die peacefully in their beds as oct/nonagenarians.