Complex sentence: The bullet exited out of the back of his head and Dwyer collapsed to the floor behind the podium, while blood began to gush from his nose and witnesses screamed and cursed as five news cameras recorded the events.
Split into simpler sentences: The bullet exited out of the back of his head and Dwyer collapsed to the floor behind the podium as blood began to gush from his nose. Witnesses screamed and cursed as five news cameras recorded the events.