The outline is done, and today the painting begins on a Black Lives Matter mural in Harlem.

Local artists and community organizations will fill in the letters drawn on Adam Clayton Powell Boulevard, between 125th and 127th streets.

Al Sharpton and State Attorney General Letitia James are among those expected to speak at Friday’s ceremony.

The mayor has given the green light on murals in each borough, including one on Fifth Avenue in front of Trump Tower.  In a tweet President Trump called it a “symbol of hate.”

"I was not shocked, but troubled, when President Trump tweeted that putting Black Lives Matter on 5th avenue would somehow denigrate the luxury — quote unquote ‘luxury’ — of 5th avenue,” said Mayor Bill de Blasio in a briefing.

“And my response was that Black people built 5th avenue, built NYC, built America. They gave people the right to have the luxury. A lot of them did not get to participate in it, or experience the fruits of their labors. So this is a small, small measure to show respect,” he continued.

The Harlem mural will be officially unveiled Monday and work on the 5^th avenue mural is expected to begin next week after a series of delays.