Upper Marlboro Mayor Tonga Turner is resigning, saying she's the victim of racist attacks and bullying.In her resignation letter, the mayor did not say the attacks are the reason for her stepping down, but she mentioned the town's "dark history and past," WRC-TV reported."I am writing to inform you that effective Friday, June 21, 2019, I will no longer be serving as mayor and president of the board of commissioners for the town of Upper Marlboro," Turner wrote in the letter.Residents who attended a town hall meeting Monday said the mayor talked about being called racists names, receiving threatening emails, having her tires slashed and having been spat on."No one of any color of any race of any ethnicity is ever going to scare me into doing anything," Tonga told WRC-TV. "Racism has been alive and well for many years and we are not immune to that in PG County, particularly in a community where, for over 300 years, there has not been a person of color on the mantel. That tells you where we have been and where we need to go."