Brittish CCTV "worthless"?

Apparently, CCTV cameras work pretty well when scaring off premeditated crime, such as car burglaries.
Warding of violent criminals, drunk vandals, and people infuriated because "you done did disrespect them" is not a CCTV forte.

"In terms of town centres, where a lot of the behaviour is violent behaviour, often fuelled by alcohol, people aren't thinking rationally. They get angry, the CCTV is the last thing they are thinking about."
"Even the presence of police officers doesn't deter the disorder on the street, so cameras are unlikely to deter them."

A grim reminder of the fact that even though CCTV systems may help catch criminals after the fact, they do not protect your life, they do not mend broken bones, they do not bring you back from the dead. A gang of teenage criminals was out vandalising a car. When the husband of the cars owner interviened, he was beaten down and kicked untill he went into a coma, he died.

The events were caught on camera, but the poor man still died, his wife and daughter are still heartbroken.

Surveillance isn't worthless in terms of crimefighting, but it does little if anything to keep you safe. Aren't most murders "spur of the moment" events? Isn't that why guns are so bad, because somebody who gets enraged might go and get a gun to kill you?

Cameras don't save lifes, self defence save lifes!
Cameras only make your murderer a celeberty.