Racial profiling refers to the use of an individual’s race or ethnicity by law enforcement personnel as a key factor in deciding whether to engage in enforcement (e.g. make a traffic stop or arrest). The practice is controversial and is illegal in some nations.

The concept of racial profiling has been defined in many ways, including:

At a Federal level, racial profiling is challenged by the Fourth Amendment of the U.S. Constitution which guarantees the right to be safe from unreasonable search and seizure without probable cause and the Fourteenth Amendment which requires that all citizens be treated equally under the law.

In his February 27, 2001, address to a Joint Session of Congress, President George W. Bush declared, "Racial profiling is wrong, and we will end it in America. In so doing, we will not hinder the work of our nation's brave police officers. They protect us every day -- often at great risk. But by stopping the abuses of a few, we will add to the public confidence our police officers earn and deserve."

Shawn Corey Carter (born December 4, 1969), better known by his stage name Jay-Z, is an American rapper, songwriter, record producer, entrepreneur, and occasional actor. He is one of the most financially successful hip hop artists and entrepreneurs in America, having a net worth of over $450 million as of 2011.He has sold approximately 50 million albums worldwide, while receiving fourteen Grammy Awards for his musical work, and numerous additional nominations. He is consistently ranked as one of the greatest rappers of all-time. He was ranked #1 by MTV in their list of The Greatest MCs of All-Time in 2006. Two of his albums, Reasonable Doubt (1996) and The Blueprint (2001) are considered landmarks in the genre with both of them being ranked in Rolling Stone magazine's list of the 500 greatest albums of all time. Blender included the former on their 500 CDs You Must Own Before You Die.

Jay-Z co-owns the 40/40 Club, is part-owner of the NBA's Brooklyn Nets and is also the creator of the line Rocawear. He is the former CEO of Def Jam Recordings, one of the three founders of Roc-A-Fella Records, and the founder of Roc Nation. As an artist, he holds the record for most number one albums by a solo artist on the Billboard 200 with eleven. Jay-Z also has had four number ones on the Billboard Hot 100, one as lead artist.

The fatal shooting of Trayvon Martin by George Zimmerman took place on February 26, 2012, in Sanford, Florida, United States. Trayvon Martin was a 17-year-old African American male who was unarmed. George Zimmerman was a 28-year-old multi-racial Hispanic American, who was the community watch coordinator for the gated community where the shooting took place.

While on a private errand, Zimmerman saw Martin walking inside the gated community where Martin and his father were visiting his father's fiancée. Zimmerman called the Sanford Police Department to report Martin's behavior as suspicious. Shortly afterwards, there was an altercation, which ended with Zimmerman fatally shooting Martin once in the chest at close range.

When police arrived on the scene Zimmerman told them that Martin had attacked him and that he had shot Martin in self-defense. Zimmerman was bleeding from the nose and two vertical lacerations on the back of his head.EMTs treated Zimmerman at the scene, after which he was taken to the Sanford Police Department. Zimmerman was detained and questioned for approximately five hours. A statement was videotaped, and he was then released without being charged. Police said that they had not found evidence to contradict his assertion of self-defense.

Michelle Alexander (born c. 1968) is an associate professor of law at Ohio State University, a civil rights advocate and a writer.

Alexander is a graduate of Stanford Law School and Vanderbilt University. She served for several years as director of the Racial Justice Project at the ACLU of Northern California, which spearheaded a national campaign against racial profiling by law enforcement. Alexander directed the Civil Rights Clinic at Stanford Law School and was a law clerk for Justice Harry Blackmun at the U. S. Supreme Court and for Chief Judge Abner Mikva on the United States Court of Appeals for the D.C. Circuit. As an associate at Saperstein, Goldstein, Demchak & Baller, she specialized in plaintiff-side class action suits alleging race and gender discrimination.

Alexander now holds a joint appointment at the Kirwan Institute for the Study of Race and Ethnicity and the Moritz College of Law at Ohio State.

Alexander has litigated numerous class action discrimination cases and worked on criminal justice reform issues. She is a recipient of a 2005 Soros Justice Fellowship of the Open Society Institute.^{[citation needed]}