El Mac sounds like he should be some infamous assassin who wears cowboy boots and travels the world handing out vigilante justice. He may do that in his spare time (sorry if we blew your cover Mac) but mostly he makes amazing street art.
Since the '90s, El Mac has been spray painting massive murals on concrete walls in Mexico, the U.S, South Korea, France and about a billion more places. His art is inspired by the myriad of influences he had growing up in L.A, particularly Mexican and Chicano culture. The thing about El Mac's art is not only is it visually striking in depicting personal and touching moments, but they tend to be humongous-- it's not surprising that they take so long to do.
More at elmac.net