Trump moved Tulsa rally date after learning about Juneteenth

President Donald Trump didn't know the significance to black Americans of the date and location he chose for his first campaign rally since the coronavirus pandemic more than three months ago, key Republican supporters of the president in Congress said Sunday.Trump had scheduled the rally for June 19, known as Juneteenth because it marks the end of slavery in the United States.Black community and political leaders denounced the moveand called on Trump to reschedule.