U.S. Congressional candidate Marjorie Taylor Greene posted a now removed Facebook image posing with a gun alongside images of U.S. Reps. Alexandria Ocasio-Cortez, Ilhan Omar, and Rashida Tlaib saying that she’s the “squad’s worst nightmare.” You may have heard of Greene by now. She’s proudly Islamophobic, anti-Semitic, and racist. She also embraces the QAnon conspiracy theories. …