Suicide of Christine Chubbuck
Christine Chubbuck (August 24, 1944 – July 15, 1974) was an American television news reporter who worked for stations WTOG and WXLT-TV in Sarasota, Florida. She is best known for being the first person to die by suicide on a live television broadcast.
Source: Wikipedia — Suicide of Christine Chubbuck (CC BY-SA 4.0)