الناشط المعتقل   ياسر  العياف تعرض أيضاً قبل سنوات للاعتقال والضرب بسبب نشاطه في الدفاع عن معتقلي الرأي  
Based on the content, which of these categories does the news article belong to: spiritual, human-rights-press-freedom, business-and-economy, sports, science-and-technology, education, environment, health, art-and-entertainment, or politics? Return only the label without any explanation, justification or additional text.