A liberal woman of color with zero name recognition and little funding takes down a powerful, long serving congressman from her own political party. When Tahirah Amatul-Wadud heard about Alexandria Ocasio-Cortez’s stunning upset over U.S. Rep. Joe Crowley in New York’s Democratic primary last month, the first-time candidate saw parallels with her own longshot campaign for Congress in western Massachusetts. The 44-year-old Muslim, African-American civil rights lawyer, who is taking on a 30-year congressman and ranking Democrat on the influential House Ways and Means Committee, says she wasn’t alone, as encouragement, volunteers and donations started pouring in. […] Still, the...