Sixteen-year-old American tennis player Coco Gauff has given an emotional speech at a Black Lives Matter protest saying she "demands change now".

Gauff, one of the sport's rising stars, urged people to vote and speak out against racism, adding: "If you are choosing silence, you are choosing the side of the oppressor.".

"We must first love each other, no matter what," Gauff added.

"I am not of the age to vote - it is in your hands to vote for my future, my brothers' future and for your future so that is one way to make change.

"Third, you need to use your voice no matter how big or small your platform is, you need to use your voice?

She added: "It breaks my heart because I'm fighting for the future for my brothers.

I'm fighting for the future of my future kids.

I'm fighting for the future of my future grandchildren.".