Considering some of the the palookas they have in the police these days & the unlawful antics they get up to I say yes, they should be personally & financially liable even if financially only to a certain degree. Lets not forget the co-responsibility of the Minister & National Commissioner as co-respondents in a civil case.
I am not aware of a criminal charge one can bring against the offender. If there isn't there should be new legislation introduced. Maybe that would stop a lot of their gestapo tactics. This includes the traffic cops.
I am a paralegal specialising in helping you to sue the Minister of Police for unlawful arrest, assault and malicious prosecution.