The mural does not have to be a colorful picture that catching the eyes, it could also be a scratch of black and white wall murals. We already know there is mural of Che Guevara in Cuba that reminds us of the struggle. It just a black scratches on the simple white walls. Its effect is to be conveyed in accordance with the struggle, gloom, and simplicity. It would not fit when illustrated with full color.
There is a term that says “less is more”. That term is also fit for black and white wall murals that convey more precise message than the color ones.It certainly is an option depending on the sensitivity of an artist who makes the work.For example,to describe the political situation he could draw a game of chess. We know that the board is black and white, but it is the artist right to make it in color because he might want to give some contradictory messages to be conveyed.
Black and white wall murals are very suitable to be described in a simple city walls, it could be the poor city or the one in conflict. It can accurately describe the condition of society and the political conditions of the time,but it also can suppress people and frustrating though its purpose is to remind that has been lost or to inflame the fighting spirit.
Image via : varrell