Because, at this point, the Democratic party is the political home of anti-Semitism. https://www.nationalreview.com/2019/01/democrats-ignore-hate-speech-from-their-own-ilhan-omar-rashida-tlaib/?fbclid=IwAR0j5Cv40NunnOqjfxDiForTd2j_ZuUOwFkAoZKvHAJrP4laC8n9yyR3dlA