Not my best genere. I feel that if I take photos of people I invade their lives, even though the expectation of privacy should be rather slim out in the streets. As I also have a rather bulky and large camera rig I do not come off as a random tourist either, and I tend to get reactions; Some very positive and some negative.
Well enough excuses.
What street-photography is very useful for is to learn yourself to see interesting moments, and then to frame them. To be able to talk to people and make them help you creating the expression you want to.
In the one below it was a street musician who for the easter occasion had taken on ears.