Live view lets you take photos without using the viewfinder which makes you less obstrusive and this works very well during street photography where you don't want to get people's attention.
Medium sized Body
Mirrorlessbody of Nikon 1 J2 is a good combination of relatively small size and good handling camera, without giving the impression of a professional camera. Average sized 1″ (13.2 x 8.8 mm) sensor
Nikon 1 J2's 1″ (13.2 x 8.8 mm) sensor size is ideal for many street photographers as it provides a good level of low-light performance and depth of field control while keeping the camera body small.
No Built-in Viewfinder
In the lack of a a viewfinder, holding the camera away from the body while using live view is not very stable, especially with heavy camera bodies and lenses. Besides, LCD screens are very hard to read under bright sunlight. No Image Stabilization
An articulated screen gives you the flexibility to shoot in non traditional positions such as waist level, which helps you to be more creative and unobtrusive in the streets.