The declared goal of the migrant's religions is eroding the cultures of the countries where they are on the way to become power players, even before they reach a majority. Much of the great things that has been accomplished by the distinct Cultures in Europe will not be preserved as islands if the left is able to overwhelm them with the introduction of people that do not want to integrate, but supplant the existing culture, even laws with their own The "left" of course has no monopoly on causing the potential shutout or stifling of other's accomplishments, I remember in school when the teachers risked prison for mentioning the name " Relativity" in physics class and playing us Jewish composer's works. Beauty is in the eye of the beholder, and no culture is "superior" in that sense, but the "enlightened" left in Europe is only seeing now, that their policies are not serving the best overall interest for preserving all cultures; not allowing to each his own.
P.S. There might not be a left left if things are left to go on with migration without integration.