From the pictures it doen't look like a bunch of Germans or Poles or Greeks that are the "Migrants". One wonders how they got to be in France?
Etrians, Sudanese, and Afghanis along with some Iraqui Kurds. The first two groups cross from Africa to ports like Marseilles with almost no interference or paperwork. Most likely the Afghanis and Kurds follow their lead.
France, in case you forgot, has a large Muslim population and many of their "enclaves" have been no-go zones for the police for decades. But apparently it gets tiring living under sharia law with no chance for sex and being totally at the mercy of somebody else for all your need (food, clothing, shelter). UK offers excellent welfare benefits, and as has been sort of in the news of late, a pretty decent (from the perspective of a pedophile/pederast goatherder) sex scene. Britain has police no-go zones, but not because of a fear of violence - they (the Brits) do not want to upset the multi-culti situation vis-a-vis the "Asians".
stay safe.