The controversial attraction has sparked a row on Thorpe Park's Facebook page, with one user posting:
I have psychosis, I'm not dangerous, and have never run after someone with a chainsaw.
Stuff like this genuinely contributes to an atmosphere in which people with mental illness suffer discrimination and violence.
More top news
The mayor, on a Brexit-themed visit to Paris, said he had not given up hope of securing a system of 'London only' work permits.
The dog, which is not a breed prohibited under the Dangerous Dogs Act, attacked its owner in Wood Green last week.
Flights were temporarily suspended on Tuesday evening after the group entered a secure area and erected a blockade near a runway.