Says you. Maybe up North. Down in the lower 48, we used to be free from cops busting down the door armed to the teeth. Not so much anymore.
They just didn't used to be as heavily armed in the past.
Trust me when I say that the history of law enforcement in the United States is sordid, and that's being generous. To top that off, I think most present-day policefolk would agree with that assessment.
As Richard quite accurately said, the 4th-6th Amendments were pretty much nonexistent until well into the second half of the 20th Century. We've made dramatic leaps forward, and these all get overlooked. Take a look at
Gant v. Arizona for an encouraging recent example (although it is actually meaningless unless further steps are taken, encouraging it remains).
Nevertheless, there is an incredible amount of room for improvement, and mistakes have been and continue to be made. There should be no reason to hesitate in addressing both. There is a recent U.S. Supreme Court case out of Maryland addressing the 5th/6th Amdmt. right to consult with an attorney (basically saying that even if you explicitly say you want a lawyer, the police can still interrogate you without one if they wait long enough, which is BS in my opinion); unfortunately I can't remember the name. For another discouraging example, look up
Herring v. U.S., which is a SC case out of, well, SC (South Carolina).
Summarized, in the first half of the 20th Century, the attitude toward the 4th-6th Amendments was "snort." The attitude now can best be summarized as "yeah, they're there, but we're not going to let them stand in the way of getting 'results.'" Obviously, there is a tremendous amount of room and a tremendous need for improvement; but the improvements we've achieved are impressive.
Anyway, that's my take on the whole thing. I'll be glad to go into more detail on specifics if anyone would like.