MANCHESTER, N.H. (AP) — Massachusetts Sen. Elizabeth Warren Elizabeth Warren is lashing out at her moderate Democratic rivals seeking the White House. She says they naively accept Republican calls for unity instead of standing up to the rich and too quickly bend to the whims of their own wealthy donors. Warren didn’t name-drop former Vice President Joe Biden or South Bend, Indiana, Mayor Pete Buttigieg in her comments Thursday, but she was clearly taking aim at them. Her strong criticism suggests that long-simmering tensions between the party’s centrist and progressives wings are boiling over.