As a clarification, I should mention that this is not a bust of a revolutionary, but of one who busts revolutionaries: Inspector Javert from the musical Les Miserables. The builder, W. Navarre, has been making Les Miserables-themed LEGO creations since the start of this year, with this bust being one of the best so far, and the first that was not a minifig-scaled vignette or diorama.
The build is quite experimental, with many complicated techniques to achieve all sorts of shapes and textures, as is expected of Mr. Navarre. This does come at a cost, because experimental means some things work and others do not. So it is that the hat and the collar work really well, just as the mouth and sideburns, but the head seems to me to be somewhat short and the nose a bit too blocky.