Michael Segalov: "A free press? I’m a UK journalist, but the police labelled me an extremist."

"Witness statements from the officers cite my time as a student campaigner as a reason to bar me: a time when I was elected as a student union officer and was voted on to the National Union of Students’ national executive council...."

"The other reason cited for labelling me as an “extreme leftwing” activist is my journalism."

I wonder why the Labour Party couldn't or didn't decide to admit Segalov to their event, regardless of the thugs. Does anyone know why?