Vice President Kamala Harris’ days as a courtroom prosecutor are long behind her. But in her first official campaign speech as a presidential candidate in Milwaukee on Tuesday, she made it clear that it was that job, and those that followed—as District Attorney of San Francisco and Attorney General of California—that make her the best person to take on Trump. “In those roles, I took on perpetrators of all kinds,” Harris said near the beginning of an energetic 20-minute speech.