BBC: A debate at the Oxford Union has begun after being delayed when protesters forced their way into the building.
BNP leader Nick Griffin and controversial historian David Irving were invited to talk about free speech.
Thirty protesters pushed their way into the hall to stage a sit-down protest at the debating table.
Earlier, 500 people staged a sit-down demonstration outside the gates of the building, preventing about half the students due to attend from getting in.
Anti-racism campaigners said the two men should not be given a platform to speak at the debate in St Michael's Street, Oxford.
Protesters chanted anti-fascist slogans and jeered "shame on you".
The students broke through a security cordon into the building where the debate, scheduled to start at 2030 GMT was delayed.
Union security officers said the protesters got into the building by jumping over the wall while others created a diversion by gathering and crushing at the front gate. >>
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Students against fee speech
THE TELEGRAPH:
Protesters break into Oxford Union debate By Ben Farmer in Oxford
THE TELEGRAPH:
Context should not affect free speech
TIMESONLINE:
Rival students clash as Holocaust denier turns up for Oxford debate
Mark Alexander
