There's a school of thought for street photography that basically says "hide and be sneaky".  I understand the root of this attitude, the idea being that you will get more authentic images and perhaps more of an emotional charge from sneaking shots of people.

I hate this.  The world has changed in the time since I started photography.  Where in the past, you could walk around with a camera making images and no one cared, today people are much more concerned about being observed and their actions tracked.  That worrying about a single person with a camera when you are tracked by innumerable surveillance cameras that you don't see is, to be blunt, a bit wacky, seems immaterial.  People are rightly concerned about privacy and about how their image may be used.  You may have heard of this thing called the Internet.  Truth and it are not necessarily entwined.