Julian Casablancas, Rage Against The Machine and Patti Smith are among 600 artists who have signed an open letter in support of Palestinian rights.Run The Jewels, Roger Waters and Questlove have also pledged their support to #MusiciansForPalestine, a document that calls for an end to human rights abuses to Palestinians in the Occupied Territories and worldwide.It comes following the recent Israel-Gaza conflict.The letter, which you can view below, calls for “justice, dignity and the right to