Thank you to Christian François of PIXelside (a very nice blog) for mentioning that this (a post of a couple of days ago), was the work of Ernest Pignon-Ernest. I remember seeing his Rimbaud somewhere. Well, he is famous. His Pasolini is very powerful.
It looks like street art stencils of Banksy fame are becoming more popular, including in Bangkok.
So I posted a sample of what you can now find on the walls of Bangkok. I like the Asian punk/metal vibe.