Louis Althusser analyzed ideology and its role in maintaining social order. He argued that ideology is produced and reinforced through ideological state apparatuses (ISAs) like the family, education system, religion, and mass media. These ISAs train individuals to accept and perpetuate the dominant ideology, making it seem natural and neutral. This reduces the need for repressive state apparatuses like the government and military to directly enforce power through force. By influencing people's worldviews, ideology justifies and preserves existing power structures in society.