"That's when I put my shopping down and went on up and said, 'You can't do that."'
He added: "I just felt, I live there, it is my city, it is my constituency. When you tolerate that the next thing is that they are smashing up people's faces."
A spokesman for Cambridgeshire Police said Karanovs faced charges of criminal damage, using threatening words and behaviour and common assault and would appear in custody before Peterborough magistrates tomorrow. His address was not available.