A Charlie Hebdo cartoon has been causing some serious unrest on Twitter.

January 7 marked a year since the horrific terrorist attack on the satirical magazine's offices in Paris.

A week on, it was swiftly back in the limelight after printing a drawing of Aylan Kurdi, the Syrian boy who was found dead and washed up on a beach in Turkey.

It says [translated from French]: "What would little Aylan have grown up to be? Ass groper in Germany."

It prompted quite a reaction...

And so it continued.

The cartoon is clearly referencing the recent attacks in Cologne, Germany, which saw nearly 100 women sexually assaulted and attacked on New Year's Eve.

The aftermath has seen a continent divided - as a result, some are calling for Germany to take in fewer or no refugees from conflict zones in the Middle East and Africa, claiming it to be dangerous to do so.

Others argue that the attacks represent a tiny minority of refugees and the actions of a few shouldn't spoil the majority's chances of a new life.

This, then, forms another side to the argument - there are suggestions that Charlie Hebdo is making the obvious point, with the subversive, dark humour it's known for, that not all refugees are criminals.