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Public opinion is among the critical types of information that often inform policy changes and political strategies. Extreme public opinion is of particular importance due to the potential it has in leading to radical behaviors and violent actions. The monitoring and analysis of extreme public opinion are therefore of great interest to government officials seeking to maintain public order and preempt violent actions. Radicalization is the process employed to influence individuals to develop extreme views and behaviors. Due to their global reach and popularity, social media platforms are used tools for recruitment and radicalization. Recently, data mining and natural language processing techniques have been employed for the detection of extremism and radicalization online. However, the existing approaches focus on the classification of individuals as extremists or non-extremists, thus simplifying the concept of …