Conversation so far:
What happened with Mumia education and career?
He was suspended for distributing literature calling for "black revolutionary student power".
Where was he suspended?
his former high school.
Who suspended him?
his former high school.
Which part of his journalism career was worth mentioning?
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.
Which institution did he attend?
he studied briefly at Goddard College in rural Vermont.

Question: What was his activity in the school?
Self-contained rewrite: What was Mumia Abu-Jamal activity in the school?