Mumia Abu-Jamal (born Wesley Cook; April 24, 1954) is an American political activist and journalist who became involved in black nationalism in the 1970s. He is a supporter of the MOVE Organization, and was also a member of the Black Panther Party until October 1970 but left the party and became a radio reporter, eventually becoming president of the Philadelphia Association of Black Journalists. He was convicted and sentenced to death in 1982 for the murder of Philadelphia police officer Daniel Faulkner. After numerous appeals, his sentence was commuted in 2011 to life imprisonment without parole.

After leaving the Panthers, Abu-Jamal returned to his former high school. He was suspended for distributing literature calling for "black revolutionary student power". He led unsuccessful protests to change the school name to Malcolm X High. After attaining his GED, he studied briefly at Goddard College in rural Vermont.  By 1975 Abu-Jamal was pursuing a vocation in radio newscasting, first at Temple University's WRTI and then at commercial enterprises. In 1975, he was employed at radio station WHAT and he became host of a weekly feature program at WCAU-FM in 1978. He was also employed for brief periods at radio station WPEN, and became active in the local chapter of the Marijuana Users Association of America.  From 1979 to 1981 he worked at National Public Radio-affiliate (NPR) WUHY; he was asked to resign as management believed he did not maintain a sufficiently objective approach in his presentation of news. As a radio journalist, Abu-Jamal was renowned for identifying with and covering the MOVE anarcho-primitivist commune in Philadelphia's Powelton Village neighborhood. He reported on the 1979-80 trial of certain of its members (the "MOVE Nine"), who were convicted of the murder of police officer James Ramp. Abu-Jamal had several high-profile interviews, including with Julius Erving, Bob Marley and Alex Haley. He was elected president of the Philadelphia Association of Black Journalists.  In December 1981, Abu-Jamal was working as a taxicab driver in Philadelphia two nights a week to supplement his income. He had been working part-time as a reporter for WDAS, then an African-American-oriented and minority-owned radio station.

Using a quote from the above article, answer the following question: What was his activity in the school?
He led unsuccessful protests to change the school name to Malcolm X High.