Deniers are individuals or groups who reject widely accepted scientific evidence or historical facts. This term is often associated with those who deny issues like climate change, evolution, or the Holocaust. Their beliefs can stem from various factors, including misinformation, ideological beliefs, or distrust in authorities. The impact of deniers can be significant, as their views may influence public opinion and policy decisions. For example, climate change deniers can hinder efforts to address environmental issues, while Holocaust deniers can perpetuate harmful narratives that undermine historical truth. Understanding their motivations is essential for fostering informed discussions.