Racism is a brutal practice in history and at present we can find racism, discrimination and racial inequality in world. Discrimination based on colour is still practiced in some part of the world. To stop this kind of discrimination in modern time Black Lives Matter(BLM) movement begins. In 2013 activists and friends Alicia Garza, Patrisse cullors and Opal Tometi originated the “hashtag #Black Lives Matter “Movement in social media, following the acquittal of George Zimmerman in the shooting death of African – American teen Trayon Martin. The Black Lives Matter (BLM) movement gained international attention during global protests in 2020 following the murder of George Floyd by Minneapolis police officer Derek Chauvin. Main reason for the success of this movement was social media. This particular research paper will examine the significant role of social media in the Black Lives Matter (BLM) movement highlighting its impact on amplifying marginalized voices and mobilizing protests thorough influencing public opinion and policy changes. Social media platforms have enabled rapid communication and mobilization features allowing Black Lives Matter (BLM) movement to reach worldwide and build a diverse coalition of supporters. Social media platforms can bring social changes quickly because of its quick reach and accessing and using social media is easy at present.