This was not the first time, Webbo.
I was actually in the Port of Calais waiting for my ferry about three years ago when the port was invaded by about five hundred migrants. None managed to get aboard a ship (only because they closed the bow doors and pulled away from the pier). It was not a pretty sight and it was the last time I travelled to France.
I use the word "invasion" to describe these and similar scenes which I think is perfectly appropriate. People accuse me of using hysterical language, but then they've not witnessed such scenes.