Subject is exactly sexual predators
Dateline NBC ran a controversial, popular series of hidden camera stings across the country exposing (and, eventually, facilitating the arrest of) adult men who solicit sex with minors online. NBC paid an advocate group called Perverted Justice to set up "decoy" meetings with men who initiated sexual conversations with people posing as underage girls and boys. The men would show up at a house filled with NBC cameras, host Chris Hansen, and, as the series progressed, decoy actresses and police waiting outside. Hansen would confront the man with the transcripts of chat conversations leading up to the meeting. Once the police began to collaborate with the Perverted Justice stings, the men would walk outside only to be immediately arrested.