Paparazzi (plural, singular is Paparazzo for men, and paparazza for women) are independent photographers. Very often, they illegally take pictures of well-known (high-profile) people who go about their daily routines. They then sell these pictures to media outlets or tabloid newspapers.

A statue of a Paparazzo in Bratislava
Paparazzo-style photography
A group of photojournalists (Paparazzi) at an event.