Because it omits Christians from the ban? Because it bans legal visa holders and (initially) permanent residents, who, I repeat, went through the immigration process legally and now are suddenly banned based on the country of their origin? Because, Rudy Giuliani, the White House Adviser, literally admitted on live television that Trump tasked him to find a legal version of a "muslim ban"? How else are you supposed to see it, "it's not a muslim ban, it's just a ban on people who happen to be muslim specifically because their religion"?