Gladiators were slaves, criminals, prisoners of war, or paid fighters who entertained Roman crowds by fighting each other or wild animals in amphitheaters. The gladiator fights were often brutal and could result in death. While some Romans enjoyed the violence and demanded death in the arena, others like the writer Seneca criticized the fights as making people cruel. Gladiator contests in places like the Colosseum in Rome were major public entertainment events but also resulted in the deaths of over 800,000 people.