He was distributing 'race tapes' which called for the murder of Jews.
And then there is this::
AK-47 training held at London mosque
-SNIP-'MI5 has been told by their agents that scores of young men were being sent from the mosque for training at camps in Afghanistan. They reported that consignments of supplies including radio and telecommunications equipment were dispatched to Pakistan for eventual distribution in the Afghan training camps allied to or run by al-Qaeda.
They also revealed a complex operation run by some men attending the mosque to provide volunteers with false documents. Although the men recruited by MI5 were not directly involved in the logistics of supplying overseas Mujahideen, the operation was openly talked about at the mosque.'