Secure in your papers and affects means that they can't just go rifling through them. But if I have a bag in my car, and cops want to search it for drugs or weapons, then that's okay. So we've passed the point of the 4th having any legitimate meaning.
Most of the rights spelled out in the Bill of Rights have been effectively nullified. At this point they're better seen as test cases for when we need a revolution, rather than functional law.
