Major Jewish establishment organizations are strenuously lobbying for the resettlement of Syrian refugees on American soil. It's explained as a natural extension of Jewish values and history – "we, too, were refugees once. We, too, were the 'other.'" The comparison is, to say the least, abstract.
It ignores vast differences between European Jewish populations fleeing a Nazism intent on killing them anywhere in the world, and Syrian refugees who are not defamed as "subhuman" nor hunted by a murderous ideology, and who have in Europe – and should have throughout the Arab/Muslim world – plenty of open doors. But this flawed analogy is a mere quibble compared to other differences that make the wholesale importation of Syrian Muslims dangerous not only to Jews but to all Americans.