Local graffiti

One of my students/friends kindly researched this for me. I've copied his writing as is.

"Dealer simplicity" His name is Hisham Rizk he was Graphite painter student at faculty of art, and he painted a lot of walls streets like Mohamed Mahmoud at tahrir square ,etc..and he sank since 2 years ago in the river nile that's reason made his friends painted his photo to spread his art because he was talented ,good person and participated in 25th revolution.