The Day: German activists send Trump a piece of Berlin Wall

President Trump wants a border wall - so if you wanted to persuade him not to build one, there might be one way to get him to read it. Write your message on a wall. That's what one group of Germans is doing - sending an three-ton original piece of the Berlin Wall to the White House, with a message of unity. DW's Carl Nasman speaks to one of the initiators.