News ‘I am making history’: Kim Janey becomes Boston’s first Black and first female mayor March 25, 2021 N'dea Yancey-Bragg, USA TODAY Comments Off on ‘I am making history’: Kim Janey becomes Boston’s first Black and first female mayor Kim Janey replaced Marty Walsh after he resigned Monday to be President Biden's labor secretary. "Today is a new day," she said at her swearing-in.