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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 t...

Social media platforms have changed the way extremist groups recruit, influence and potentially radicalize users online. Radicalization has drawn the attention of many researchers worldwide with its increasing presence on social media. Therefore, the ability to identify and classify radical views online and their potential role in radicalizing individuals is of critical importance. In this work, we address this challenge by combining a number of machine learning and natural language processing techniques such as sentiment analysis, named entity recognition, clustering, opinion leader identific...