The 'Harmful Extremist Content' meme satirizes the automated flagging systems used by major social media platforms like YouTube and Meta. The template typically showcases a stern warning message about a policy violation, juxtaposed with something completely innocent, such as a recipe, a gaming clip, or a benign opinion. It gained traction as users began mocking the perceived absurdity of algorithmic moderation, which occasionally misidentifies harmless posts as dangerous. Today, it is widely used to humorously frame controversial yet harmless takes as if they were a threat to society.