I get into the "Life in a Police State" meme as much as the next guy, but if you think that this stuff started after 9/11 or any other recent event, I suggest that you study more history of this country.
The FBI has been ignoring the 4th Amendment and using available technology to do so since the organization was created. Before that, the Feds would contract with detective agencies, like Pinkerton, that would often ignore the 4th Amendment (as well as others). Local law enforcement have been ignoring it and, when caught violating it, retroactively making up enough story (depending on how friendly the local judiciary is) to artificially demonstrate compliance for even longer.
The person who wrote "the rot started in 1787" is correct. People with authority often (usually?) lose sight of what they are defending and need to be reminded of it. This can take the form of new laws or lawsuits or civil action or something else.
But the real problem is that, on the whole, the people of this country only really care about the particular rights that they wish to exercise when they want to exercise them and otherwise don't give a damn (or, to be more polite about it, are too busy living their lives to be concerned).