Indonesia is a nationality and multicultural state surrounded by different ethnic, linguistic, religious and ideological backgrounds and geographical areas among its regions as it is separated by tens of thousands of islands. The risk of conflict among communities is considerable. A number of these each conflict have their pedigree and anatomy. Some are triggered by differences and other ethnic, religious, political, and racist issues. Some traditions of the local community are the root of violence. This paper is a literature review to identify the traditions of the community that can be the trigger of conflicts, which is even closely related to the increasingly widespread radical action. The purpose of this exploration, in order to be a reference data to the greater knowledge and further investigation. Moreover, the data is noteworthy for the third parties namely stakeholders since this data could become a base to perform preventive actions for radicalism credo in Indonesia, particularly in Madura as the research scope conducted in the Madura Island which is very thick with its religion nuances.