Fist fight erupts in movie theater lobby.
Pennsylvania police have released security video of two separate incidents that prompted moviegoers to run for safety.
In one incident a man shoved another to the floor in a theater lobby and punched a woman in the face after she poured a drink on him.
West Homestead Police say it started over a dispute about a bathroom stall.
In another incident police said two women were fighting in a screening of "The Dark Knight Rises."
Someone apparently yelled something that prompted everyone in the theater to panic and run.
At least two people were hurt.
Police have charged one person with assault.