Horowitz was never involved in bombings - he was long gone to California by then. He was connected to my long gone friends, Sidney Zion and Warren Hinkle, who were not into violence either although they were vehemently anti-Vietnam War and other radical causes. His guilt lies in setting his friend, Betty, to be a bookkeeper for the Black Panthers. They murdered her when she found discrepancies in the accounting. He has been adamant in not supporting violence and his discomfort at the left’s advocacy of it.
Oh yes, I DO know all of that but I was reading his garbage before all of that went down and he was often in the EVO ( the EAST VILLAGE OTHER...a faaaaaaaaaaaar lefty rag of a paper ), quoted by others, and he supported the BLACK PANTHERS.
Being a bit older than you, I was probably more aware of who was doing & saying & writing what and when. And I don't think that you were faced with this crap, on a regular basis, as I was. If I'm wrong/mistaken, I'm sure you'll tell me. :-)