Is it Illegal for neighbor to be taking photos of my backyard to report me?

I live in San Diego California in an association community. One of my neighbors has some grudge with me and keeps peeking over the fence to take pictures to report any little mess I leave, like weeds growing or some pots from planting trees (new backyard). The association keeps sending me warnings of fining me, I... show more I live in San Diego California in an association community. One of my neighbors has some grudge with me and keeps peeking over the fence to take pictures to report any little mess I leave, like weeds growing or some pots from planting trees (new backyard). The association keeps sending me warnings of fining me, I feel like i have no privacy and am being harassed.
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