UCLA students and civil rights activists demanded an independent investigation into a campus police officer's use of a stun gun on an Iranian-American student. Speakers at a news conference and subsequent rally Friday said the shocking of Mostafa Tabatabainejad, 23, sent a chill across the campus. "As students we feel our safety is endangered, and we do not feel safe on campus," said Sabiha Ameen, president of the Muslim Students Association. Tabatabainejad was shocked Tuesday night after arguing with a campus police officer who was conducting a routine check of student identification at the University of California, Los Angeles, Powell Library computer lab. Campus police say he refused to show his student ID and refused to leave the building when asked. Police said they shocked him with the stun gun after he urged others to join his resistance and a crowd began to gather.