Is it illegal in California to take pictures of someone without their permission?

My English teachers tells me so but I havent found any official answer. So could I please have an answer with sources to back it up? Thanks! or:My Eng

My English teachers tells me so but I haven't found any official answer. So could I please have an answer with sources to back it up? Thanks!

or:My English teachers tells me so but I haven't found any official answer. So could I please have an answer with sources to back it up? Thanks!

or:If you are going to publish a picture, you darn well better have a contract with every person who is recognizable in the picture just to protect yourself, and that is true everywhere. Anything else depends on local laws.

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