Williams' speech was greeted with cheers and applause from those in attendance and has been widely praised on social media but the man she was addressing, the president of the United States has remained silent.
Instead, Trump spent most of Tuesday praising his fellow Republicans, the US air force, complaining about calls to defund the police and spreading further conspiracy theories about coronavirus.
Just a few days ago, Trump had claimed that Floyd was "looking down" and that it was a great day for him because of America's positive jobs numbers.
Sharpton also took aim at Trump during the ceremony, criticising his church photo op during riots outside of the White House. He said:
You take rubber bullets and teargas to clear out peaceful protesters, and then take a Bible and walk in front of a church, and use a church as a prop. Wickedness in high places.
As Williams asked, "when has America ever been great?" Well, we can't be certain but it is definitely not since 20 January 2017.