Last month, a bit spontaneously, I bought an EasyJet ticket from Berlin to Athens for around 30 euros. In 2014, a student from Damascus named Ghaith paid 6,800 euros to cross ten borders and arrive in Sweden.

It should be obvious to anyone aware of the so-called refugee crisis in Europe that borders are sieves that control the flow of people based on two things: ethnicity and income. If you have enough money, you can pay your indemnities and move where you please. If you share a blood heritage with the majority population of a wealthy country, you get filed into the shorter line at airports, you get the simplified paperwork, you are greeted by the hotelier and ignored by the police.

One of the sharpest ironies is that when you have a lot of money, unlike Ghaith, you don’t pay as much to travel. You don’t have to buy a fake passport or open your wallet to a blackmarket taxi driver or wire money to a smuggler to take you across the Mediterranean.

Of course there are exceptions to the sieve. But the exceptions are like paint flecks that fall outside of the line — you can still see the shape of the thing.

This blog, dispatching from Athens and points northward, is (first of all) my attempt to see the places and people marked by the passage in a single year of over a million souls out of North Africa and the Near East and into Europe. From June 14 through the end of the month, I will be traveling from Athens up the “Balkan Route” and writing about it.

But Left of North will also approach migration as a challenge to the current structure of the world, and it will look at migration facilitation¬† — whether you want to call it human smuggling or humanitarian aid — as a kind of politics. And it’s a politics that has begun to define the left and the right in Europe.

Helping undocumented migrants is illegal, and yet people do it. They give up spare rooms for stopovers, purchase bus tickets, line up jobs, and drive people northward. Some do it for money, some out of pity, some out of ideology. It’s this last group that this blog is most interested in. Is there a cohesive movement of leftist migration facilitators? Is it a fundamental part of a progressive vision of Europe?

Those sound like good questions to start with.