What was happening in Wilmington that made white people feel the need to violently overthrow their own government and massacre Black people?

The coup occurred after the state's white Southern Democrats conspired and led a mob of 2,000 white men to overthrow the legitimately elected local Fusionist government. They expelled opposition black and white political leaders from the city, destroyed the property and businesses of black citizens built up since the Civil War, including the only black newspaper in the city, and killed an estimated 60 to more than 300 people.[2][3][4][5]