David Alfaro Siqueiros was a Mexican artist who is famous or popular for his frescoes.
Daavid Alfaro Siqueiros, Diego Rivera and Jose Clemte Orozco are the three who established Mexican muralism.
Fresco is a method for painting pictures and it is a sort of painting or we can say that a work of art that is done on a wall, and in some cases wall painting is also mistakenly called a fresco. The word fresco originates from the Italian which means fresh.