Under Pressure Art is a series of street art by FilthyLuker that delivers a social message through simple yet brilliant additions and modifications to street items.
I particularly love his tree art in which he simply adds pairs of eyes to trees and bushes.
Check out the gallery for some of his brilliant work. His installations also come with fairly witty names such as "trees are people too", "paranoia", and "bush baby".
My favorite is seen in the fifth image, called "bad hair day," which shows a bushy bush next to a well groomed one.