Trumpty Dumpty built a great wall
Trumpty Dumpty had a great fall
 All the king's horses all the king's men
Couldn't put Trumpty together again

  The wall that be built, he sat on like a thrown
He told the people to stay on land of their own
  But so many there were, they knocked the wall down
And down came the wall, and the man with the crown

  Thought of this poem (which I wrote back when Trump was just assuming his presidency) as the migrant caravans began arriving, and I heard of one of the refugees saying he was going to wait till the rest arrived, so they could all storm the fence at once.