Emmmm - but if you can't fart on a major airfield without someone knowing about it then the option, if aviation is your thing and you are a bad boy, is to move to a small airfield. The argument about cars is a weak argument, all
major sites are protected by concrete barriers and, where necessary, an overt law enforcement presence. This is not a secret.
People, from what I've read, seem to be confusing the private guard forces at airports (muppets) with the authorities trying to deal with this problem (generally good guys). The above is obvious and all this rhetoric about the authorities not knowing what they are doing is complete crap, if there is no threat at the moment as has been suggested, it does not mean that there won't be a threat in the future. If drugs and people are being moved in and out of the country, why not this issue?
Prudent command and control strategies dictate that they need to gauge the issue and suggest proactive and reactive counter measures to their operational and political masters. GA would be better off working with them as stakeholders rather than against them IMHO, if GA sets out it stall with deference to this notion, then GA will be all the better equipped to deal with issues as they arise.
All this 'we're self regulating and self policing' thinking is what is going to undo GA. That's the dangerous thinking here IMHO.