Black Lives Matter is a social movement that originated in the United States in 2013, following the acquittal of George Zimmerman in the killing of Trayvon Martin, an unarmed black teenager. The movement seeks to address systemic racism and police brutality against black people, and advocates for policy changes to ensure greater equality and justice for black individuals.

The phrase "Black Lives Matter" has become a powerful symbol for the movement, representing the value and importance of black lives in a society where black individuals are disproportionately impacted by violence and discrimination. The movement has gained widespread support and has inspired protests and demonstrations around the world.

One of the key issues that the Black Lives Matter movement addresses is police brutality against black people. The movement has called attention to the fact that black individuals are more likely to be stopped, searched, and arrested by police, and are more likely to be subjected to excessive force during police encounters. The movement has advocated for police reform, including greater accountability for officers who use excessive force, and for the adoption of nonviolent methods of policing.

Another issue that the Black Lives Matter movement addresses is systemic racism, which impacts every aspect of black individuals' lives, from education and employment to health care and housing. The movement has called attention to the fact that black individuals are more likely to live in poverty, and are more likely to face discrimination in the workplace and in housing. The movement has also called for greater investment in black communities, including in education, health care, and affordable housing.

The Black Lives Matter movement has been met with criticism and resistance from some who argue that the movement is divisive or promotes violence against police. However, the movement's supporters argue that it is necessary to address the systemic issues facing black individuals in order to achieve greater equality and justice for all. Ultimately, the movement seeks to create a society where black lives are truly valued and protected.