AceShowbiz - Lin-Manuel Miranda has apologised for not taking an official stand on police brutality, racism and white supremacy issues.

The "Hamilton" creator and his company partners have made it clear where they stand on attacks on gay people, but they have never spoken out about America's race problems.

In the wake of ongoing clashes between police and protesters following the death of African-American George Floyd at the hands of white Minneapolis cops, Miranda has decided it's time to speak out.

"That we have not yet firmly spoken the inarguable truth that Black Lives Matter and denounced systemic racism and white supremacy from our official Hamilton channels is a moral failure on our part," Miranda says in a video posted to his social media channels.

"Hamilton doesn't exist without the black and brown artists who created and revolutionized and changed the world through the culture, music, and language of hip hop. It doesn’t exist without the brilliant black and brown artists in our cast, crew, and production team who breathe life into this story every time it's performed."

The writer, singer and actor adds, "I'm sorry for not pushing harder and faster and speaking those truths under the Hamilton banner. While we live in a country where black people are under attack by emboldened white supremacy, police brutality and centuries of systemic anti-black racism, it's up to us in words and deeds to stand up for our fellow citizens, it’s up to us to do the work to be better allies and have each other's backs."

The video links to organisations like Black Lives Matter, the National Association for the Advancement of Colored People and the Minnesota Freedom Fund.