for a total and complete shutdown of muslims entering the united states until our country's representatives can figure out what the hell is going on. >> reporter: the republican presidential front-runner calling for a ban just days after the recent attacks in san bernardino. >> we can be politically correct and we can be stupid. >> reporter: the muslim community here expressed some outrage. >> my question to donald trump would be, what are you going to do with the 7 million muslims who currently live in the united states? political realms here. >> we understand we live in a country that still protects our liberties. but we worry about the direction that the political discourse is headed. >> this rhetoric echoes nazi germany against the jews. >> reporter: the philadelphia daily news drawing a comparison to hitler, and this from his mayor. but still on good morning america, a steadfast trump doubling down, invoking president roosevelt's action against german, and japanese descent.