Where we’re the security?! Someone had to get her out, so he did
Security were dealing with all the protesters.
Why did someone have to get her out just then? He must have known she didn't present any dangers. The security guards managed to get all the others out without assaulting them in this way.
She had no right to be there.
How do you know?
He didn’t know if they were armed or what their intentions were
Yes, he did. He knew that she would have come through airport-style security and that there was nowhere where she could have been hiding arms. He knew her intentions because she kept telling him.
If you think he seriously believed she was armed, how come he let her go once she was outside? How come no-one else thought she was?
He did no lasting damage, indeed significantly less than a milkshake which the woke left thought was fine on Farage.
How do you know? And are you seriously saying assault is OK so long as the bruises will fade? Or that damage from a thrown milkshake is more serious than an attack on someone's neck?
You don’t have a right to protest on private land, if you do this you run risks and they were happy to take their chance.
You run the risk of lawful steps to eject you. You don't run this risk.