Stalker

Is it just me or does anyone else feel a bit dodgy pointing a camera at random strangers and taking pictures?

I think that some of these are the best shots as well. Just can't bring myself to do it as it generally involves other people staring at you and in this day and age most people are unhappy with you when you whip out the camera in a non touristy place.

I headed down to the library today to blip some old law books from 1821 and other stuff that was about there. I thought I'd point the camera through a shelf and see what happened. Never noticed the people on the left until I viewed it back. Thought I'd try it again properly and ended up getting this bloke checking out the blonde as he walked by.

So how do you go about getting pic's like this with out looking like a perv or a stalker? Long range zoom or just go for it and have a good pair of trainers on incase it all turns nasty?