Fundamentalism is often identified with strict adherence to literal religious teaching, while radicalism leads to extreme actions to achieve change. Although both can provide a strong identity and moral clarity for their followers, they also have great potential to cause conflict, violence, and polarization in society. This study describes the advantages and disadvantages of fundamentalism and radicalism in religion. The research method used is a qualitative approach with a descriptive analytical method. The approach used by research in solving existing problems is normative and theoretical. This study explores the impact of fundamentalism and radicalism on society includes social conflict, polarization, and stigma against certificate groups. Altogh Fundamentalism Can Provide a Solid Sense of Identity and Community, and Radicalism Can Increase Social Awareness, Both Also Have the Potential to Cause Violence and Intolerance. With a better understanding of the interaction between fundamentalism and radicalism, it is hoped that more effective strategies can be developed to ease tensions and create a more inclusive and harmonious society.
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