A late-night "shock jock" calls out an individual from the news and says they need "fixing". An hour later someone calls and says it's done. The police call and informs the "shock jock" that someone is acting on his instructions and has killed the person he called out.
This triggers a war between callers praising or attacking the Shock-Jock. The cops are also demanding assistance and blaming the shock jock for triggering the actions of the person. All this time the killer is calling in.
We see the life of the shock jock collapse in real-time. In a two-hour shift, he goes from hero to husk.