They're not "migrants". Migrants go to an embassy, apply for a visa, wait their turn and then come when they're allowed.
These people are *illegally* entering a European country. Given that Europe has no borders within it, they are effectively entering all of Europe illegally. And from there, since Britain won't enforce our borders either they can come here.
I really hate the language that people sometimes use when discussing these issues but 50 THOUSAND people coming into a country illegally in a day can only be described truthfully with one word: invasion.
These people are invading our countries against our will. If you're someone who is really concerned about the "rise of the far right", you should be calling and actively working for this to be dealt with with extreme urgency. Because if liberals don't police the borders, fascists will.