Officers sue Palo Alto over Black Lives Matter mural Published Police association asks Palo Alto to remove convicted cop killer from BLM mural The National Police Association is asking a Silicon Valley city to change a large Black Lives Matter mural in front of City Hall to remove the painting of a fugitive who is wanted for escaping prison nearly 50 years ago while serving time for killing a police officer. PALO ALTO, Calif. - Five officers have sued the Silicon Valley city of Palo Alto, saying it allowed the creation of a Black Lives Matter mural with anti-police images that constituted harassment and discrimination against law enforcement.