Irvine is generally a safe city and conservative to boot. A very nice area.
The problem in this state is people have a false sense of security. They move into a nice area, far from crime, and believe they are safe.
Like that woman who was killed in Lafayette, an area of $1+ million homes. The scumbags took BART to Lafayette, walked a mile or so to her block, saw the garage door was open, and walked in. Raped her, killed her and stole her Mercedes minivan.
Although scumbags like these guys stick out like a sore thumb, who's there to see them? Most women in that area work and the kids are at school. During the day it's a ghost town.
In my immediate area, there has been one home burglary in 23 years, the last murder was in 1984 or so, but regardless, I keep the doors locked and always have quick access to a firearm. Call me paranoid.