Referenda on Immigration

France's Le Pen is proposing a referendum on immigration if she is elected. She probably won't be elected, but there's a good chance this kind of thing will become more common regardless.

Hers is pretty tame stuff, arguing for limits and regulations about who can come as well as favoritism for actual French citizens when obtaining government benefits. The real deal will be when groups start revoking the immigration status of those who have already been admitted. Germany admitted a million refugees from Syria and the Middle East; France is awash with immigrants from North Africa; the Scandinavian countries are having significant epidemics of bombings and rapes from their own migrant communities. 

At some point people are going to start wanting to rethink the admission of groups that don't fit in and cause significant problems. Democratic means can be used for any popular end, not only for globalistic or left-leaning priorities; and if democracy alone justifies the right, then it's just as right to vote for a government to expel the unwanted as for a democratically-elected government to vote to let people in. 

Now if there are deeper principles of justice at work, that might not be true. It is not clear to me, however, that Europe has many remaining sources of deep philosophical principles; their governments didn't like the ones they inherited, and so they have worked to abandon them.