This newsgroup often discusses privacy issues and technology.
On Easter this year a retired man was murdered after he opened the front door of his home. He was a very well liked man and no one could understand why anyone would kill him like that. There were no suspects.
The video security system of a convenience store captured a picture of a man who stopped by earlier asking directions to the victim's house. The picture was investigated and eventually it turned out the man was a once co-worker of the victim. Upon further investigation (and a two hour standoff), the man was arrested. He had a gun with bullets that matched those used on the victim.
The DA said that without the picture the crime wouldn't have been solved.
So, in this case, the video surveillance solved a crime.
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