Hey guys,
I thought about writing this blog post after receiving many questions regarding street photography. I saw it as a great opportunity to help clear up some misconceptions about street photography, as well as answer questions from many aspiring street photographers from around the world! If you have any other general questions, feel free to leave a comment below and have either me or some other street photographer from the community answer your question!
1. Do I need a model release form when shooting people in the streets?

No. As long as a person is in a public area and not on private property, you are free to take their photo without having a model release form. However the tricky part is when it comes to selling images of people shot in public areas. If the photo you are selling clearly defines a person’s face, then you need a model release form.
Edit: In the US, you are allowed to sell a recognizable photo of someone on the street as a work of art. What you are not allowed to do is to sell it for commercial photography — that is to say, photos being used to sell a product. This would prevent the sale of photos of a recognizable person to (let’s say) a stock photo service, but not as a work of art, or photojournalistic purposes.
Relevant reference:
http://en.wikipedia.org/wiki/Nussenzweig_v._DiCorcia
-Thanks Brandon!