President Trump has attacked California Democratic Congressmember Maxine Waters on Twitter, calling her an “an extraordinarily low IQ person” and ending his tweet with a threat: “Be careful what you wish for Max!” Trump’s attack comes after Congressmember Waters encouraged people to continue protesting members of the Trump administration in public. A number of top Trump officials have faced public protests in recent days, including Homeland Security Secretary Kirstjen Nielsen, Press Secretary Sarah Huckabee Sanders and Vice President Mike Pence.