Infamous people are individuals known for their negative actions or controversial behavior, often leaving a lasting impact on society. Examples include criminals like Al Capone, a notorious gangster during the Prohibition era, and Adolf Hitler, the leader of Nazi Germany responsible for the Holocaust. Their actions have led to widespread condemnation and have shaped historical narratives. These figures often become subjects of study in fields like history and psychology, as their lives and choices can reveal insights into human behavior and societal issues. Infamy can stem from various actions, including crime, political tyranny, or unethical behavior, making these individuals memorable for the wrong reasons.