What do you think is the key to uniting humanity?

The knowledge that planet X has set its sights on Earth and doom is on the horizon. People will be busy patching up their lives and asking for forgiveness from wives or Maker. No one will care about arguing about health care or global warming. People will be benevolent and willing to give of themselves in those last hours and some might throw their worthless money to the wind. Won't matter if you're black or white, all will have empathy in the fact that they are now going the way of the dinosaur.