Yes - they should be higher.

In public places, no. They are just a technological extension of the policeman walking a beat. They enable police to do their legitimate work more efficiently. +5

Because public spaces are -so- private otherwise. Generally the only people who think they are an invasion of privacy are people who are doing inappropriate or illegal things in public.

Video surveillance cameras provide security and hard evidence. However, the use of such cameras has raised a great deal of legal debate. Many feel that covert cameras violate their privacy rights. The concern over these cameras in the workplace and other public arenas has led to the need for invasion of privacy laws. The Personal Information Protection and Electronic Documents Act is one type of right to privacy law in Canada. This act states that unless in extreme circumstances, such surveillance is only legal when those who are being taped are aware that it's happening. Regulating the use and practice of surveillance is one way to avoid privacy invasion. In a non-workplace setting, invasion of privacy due to surveillance is also an issue. Private investigators have to follow rules to avoid being taken to a court of law for invasion of privacy. Surveillance cannot take place in a private area such as a bedroom, as this violates the Fourth Amendment. Including audio is also illegal. "Reasonable expectation of privacy" is one of the keys to surveillance being legal. If your employer is using a camera in a public area, that is one thing. Cameras in the bathroom present a completely different matter, and violate rights of privacy. Covert surveillance provides more security but it also raises interesting legal and privacy issues. It isn't illegal for a parent to use a covert camera to survey their nanny but the nanny may regard this as invasion of her privacy. But, an obvious camera may lead to different behavior. The debate over the use of such cameras shows that what is lawful and what we feel we have the right to are not always the same.

No more than our cameras on law enforcement

Depends on where they are located. You have absolutely no expectation of privacy in public places (usually).