Infamous crimes are notorious acts that capture public attention due to their shocking nature or the circumstances surrounding them. These crimes often involve serious offenses such as murder, robbery, or fraud, and they can lead to widespread media coverage. Examples include the Jack the Ripper murders in London and the Bernie Madoff Ponzi scheme, both of which left lasting impacts on society. The notoriety of these crimes can stem from various factors, including the criminal's background, the brutality of the act, or the legal proceedings that follow. High-profile cases, like the O.J. Simpson trial, often spark debates about justice and societal issues, making them memorable in history.