Street photography is not as simple as it looks. You have to dare to approach people and take a picture. One of the methods is to chase a person like a detective does. It also adds to the excitement of photography because it doesn’t stop with one photo. You also have to make sure that your subject doesn’t notice it. This takes some practice but it’s certainly worth a try.
Did you know that artist Sophie Calle once did this too?
http://ensembles.mhka.be/actors/sophie-calle