Former Sen. Joe Lieberman (D- and I-Conn.) complained on Thursday that Rep. Alexandria Ocasio-Cortez (D-New York) was getting attention because she’s “different” and “controversial.” He also said she was too “left-left” for the Democratic party as a whole. 

As his comments made the rounds on Twitter, Ocasio-Cortez shot back with a four-word response: 

Lieberman served nearly 25 years in the Senate, much of that time as a Democrat until he lost a primary in 2006. He ran and won as an independent, but still caucused with the Democrats.