In the olden days, they'd round them all up, lock them in a barn and set it on fire.
Or harpoon them from ships and render their blubber for oil.
If the Europeans were sensible, they'd erect statues of Cap'n Ahab in every capital city, legalize chubby-hunting as a sustainable biofuel harvesting method, and watch with glee as a combination of terror fueled adrenaline and frantic waddling from danger shrunk the waistlines of all but the most irredeemable behemoths to non-disabling proportions. Better still, if manufacturers fitted the harpoons to cars, I have no doubt that the average Citroen, Peugeot, Fiat or small VW could be run for several weeks on the fruits of just one venture onto the streets of Brussels or any other large European city.
Citizens of the world, start petitions, start lobby groups. This needs to happen now, to save our environment and improve the scenery in our streets and supermarkets..