You can find the law's definition of harassment here, which specially states taking a picture without prior parental consent.
http://www.leginfo.ca.gov/pub/13-14/bill/sen/sb_0601-0650/sb_606_cfa_20130522_152332_sen_floor.html
Glad I no longer live in California.
I found this interesting, to say the least, at the end of the bill:
" ARGUMENTS IN OPPOSITION : The Motion Picture Association of
America states, " the bill, as currently drafted, implicates the
First Amendment's protection of free speech since it reaches
activity which may occur on public property or public spaces,
such as streets, sidewalks, parks, beaches, as well as
restaurants, shopping malls, etc. In addition, a parent may
assert there is "no legitimate interest" in a photo of his or
her child, and will have a private right of action to attempt to
vindicate that position.
Cameras are ubiquitous; almost anyone with a cellphone is a
photographer. A person taking pictures of his or her child at a
sports event, or musical performance could run afoul of the
bill's provisions by capturing other children in a photo. And a
tourist who snaps a picture of a celebrity with his or her child
could also be prosecuted or sued under this bill."
It appears the law was originally drafted to protect the children of public servants, law enforcement and workers at health clinics offering abortion services specifically, and is now being amended to include "public figures". Seems the MPAA is in opposition to the desires of its "employees."