You know that the National Security Agency is spying on you, right?
It's been all over the news, consistent with the media's role as the Fourth Estate (watchdog of the powerful).
Now we're starting to get a sense of how big this problem is. See here:
But this is just the tip of the iceberg. In fact, the NSA is capturing every single phone call and email from the US overseas. Every single one! Including content!
Given that the 4th Amendment protects against unreasonable search and seizure and requires that the government demonstrate in court that it has probably cause to search a person or place or property--and since the government is NOT doing this in its national security spying programs--we can thus conclude the 4th Amendment no longer exists (at least in these cases).
And think of all those people out there scared to death that the 2nd Amendment is being threatened because "the government is coming to get our guns" (even when there is literally no law or program in place that does this).