Protesters spent months occupying an ancient cottonwood. Then a tense standoff with US border patrol came to a headA 200-year-old cottonwood tree near the US-Mexico border, known as the “grandmother”, has been destroyed to make way for the construction of Donald Trump’s border wall, despite a months-long effort by protesters trying to save it.In late July, land defenders began a tree-sit in the ghost town of Lochiel, Arizona, taking turns occupying a platform high in the tree’s canopy. The group