Elizabethan theater used crude special effects to realistically portray violence on stage, including concealed animal organs and bladders filled with blood that were pierced during sword fights. The Globe Theatre, which held up to 3000 spectators, thrilled audiences with these gory displays. Violence and bloodshed are prominently featured in Macbeth, representing the characters' guilt. The play opens with a battle and wounded soldier, and depicts Macbeth's murders of Duncan and Banquo, as well as the deaths of Macduff's family, cementing its themes of blood and guilt through graphic imagery.