Some depict lifestyle, others pure entertainment, while some are straight politics. For instance, the walls along the busy Muindi Mbingu streets have been honored with out of this world, classic art by unknown artists. This images bring to light what the Kenyan politicians have tried to keep in darkness. You might just end up having a conversation with the graffiti on this street walls.
Have a look at this video and admire the power of art through spray paint cans.