You folks are really paranoid. Lets put it this way and maybe you will understand. Waco was wrong because while the people there were nutjobs, they were not an immediate threat to anyone. The government coming to your home and searching without a warrant is wrong no matter how out there you guys sound because you are not an immediate threat to anyone except yourselves. Now if you start setting off bombs and shooting people you go from being paranoid to being a threat to innocents, then they can and should search for you.
And no matter how you guys try to spin it, there is a big difference between being a dissident and a terrorist, and his being 19 years old changes nothing. I know some very well trained 19 year olds in the military.
I think the question people are trying to raise is there is a big difference between surrendering your rights and having your rights taken. I guarantee you 99% of the people would surrender their 4th amendment rights in the Boston situation with or without a gun pointed in their face. I would be in that 99% myself. But the issue at hand is that many of the videos listed in this thread, don't show people being asked to surrender their rights, they are videos of their rights being taken. Law's are written to help avoid situational ethics.
This might be one of the greatest examples of situational ethics you will ever find.
The reality is regardless of how you "feel" about a constitutional right, its either in effect or it's being ignored. There is no half on, or half off.