He said as he did, he felt something hit him on the back of the head.
Mr Barnett described turning around and seeing Tierney stood by him with the camera tripod in his hands.
He went to hospital and had to have the cut to his head glued.
During his time on the witness stand, Tierney, of High Street, Hale Village, said the anti-fascists ran at the BNP “screaming like banshees” and he used the tripod as a barrier to stop himself being attacked.
The case continues.
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