<<1. They were not welcome - throughout history - among other nations . They were discriminated against , raped ,pogromed , murdered , at best exiled from nearly everywhere .
Even in the USA , in some parts , back in the 50's , they could not simply , enter certain pubs ( blacks , jews , dogs ...you know that one ) or clubs .>>

They were judged by many, must be bad.

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Is it a terrorizing threat ?