This play follows Shakespeare's tragedy, which is a notoriously dark and violent play. None of the violence in this film version is graphic, however, and the PG-13 re-rating was probably overkill.
The gloomy and dark black-and-white cinematography makes the overall mood and tone of the film especially grim and dreary.
The scene where Lear is out in the storm with his jester, crying out to the gods and begging for mercy, is very intense.
The scene where Edgar is found in the hovel and the Fool believes him to be a demonic spirit is also very intense and chaotic.
The ending is extremely sad and disturbing (though, again, not graphic in its portrayal).