Class conflict is when different groups of people in society don't get along. It's when people with different amounts of money, or different backgrounds, or different beliefs, don't like each other. For example, if people in one group feel like another group is getting more money or better things, or feel like their group isn't being respected, then there can be class conflict. It is like a fight between two teams, except instead of the teams being made up of people playing a game, it's made up of people with different backgrounds, money and beliefs.