Police are looking for a man who attacked a street performer dressed as the movie character, Predator, in Birmingham city centre.
Images captured on a mobile phone show a young man running up behind the performer and pushing them from a podium in front of numerous onlookers.
The incident took place at the Bullring shopping centre on Sunday.
More top news
More than 60 Nottingham institutions and businesses are heading to Parliament Square to boost the city's profile.
A man who groomed and had a sexual relationship with a teenage girl after meeting her at a riding school has been jailed for nine years.
A man was rushed to hospital on Saturday night after being stabbed in a McDonalds restaurant in Birmingham.