system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can paparazzi stalk celebrities and harass them legally?

I've never understood how they can constantly stalk celebrities and then play the victim when someone loses their cool and throws a punch. I understand this is what they *want* to happen, but obviously it's not an isolated case. People are pestering them every day. I can't imagine that any sane person wouldn't lash out eventually.
gpt
If someone is in public, they are fair game. The Paparazzi could camp outside your house and follow you down to the mall shooting photos all the way. Photograph you through the window of the restaurant with your date. They don't do this, because they can make far more per photo by doing this to a celebrity instead. A photo of a celebrity looking amazing, like they're hungover, happy, angry, sad... someone will pay thousands for it.

The most basic answer to your question though is: It is perfectly legal to stand in public and take photographs.