On Saturday, The Hammer Museum invites you to come see Chaz Bojorquez, one of the fathers of L.A.'s street art, as he speaks about his art and experience. A native of East L.A., Bojorquez has done graffiti and been a major figure in L.A.'s street art culture since the 1950s, meaning he's a real O.G. of graffiti. His unique style can be attributed to his fine art education and strong background in Asian calligraphy, which he draws on for his graffiti works. Here's your chance to hear one of the great masters of street art, who practically invented tagging, talk about the craft and his involvement in helping it become one of today's most popular art forms.