Says who? A few of you keep saying that but it's un-American itself to let a tiny, anonymous minority determine what's right for whole country. What exactly is American? I think it takes a consensus or compromise from voting public to determine that.

"many reasonable people, perhaps a majority, in this democracy of ours never had chance to vote or have any say in their creation."

The intelligence services were created by elected representatives in response to a second, World War that killed tens of millions of people. They actually helped end the war sooner. Their existence and general goal, although not all specifics, were repeatedly accepted by Americans. Instrumental in helping us with Cold War. Yes, most of the voting public is fine with the existence of spy agencies going back decades. It was abusive activities that harmed innocent people here and abroad that we fought against. Not surveillance or actions that protected our interests or citizens, though. Almost no protest.

"Then taking into account legality, many consider them a violation of the 4th amendment. "

That's why they were supposed to spy on foreign countries. They don't have 4th Amendment rights any more than they have responsibilities to America under our Constitution. And, yes, there were public discussions about the existence of military and intelligence activities going back decades. Americans knew they existed and were fine with the concept.

Wait, maybe I made a mistake here assuming you're American given your comments. You may be a foreigner who never read a U.S. history book. My apologies if you were referring to your own country where people never had a choice. Americans, on other hand, chose spying repeatedly with a big chunk choosing domestic spying in restricted form. The latter were foolish but the former are matter of public record.