To facilitate the construction of a section of wall on the border between the United States and Mexico, the U.S. government has been using explosives on a sacred hill, angering the Kumeyaay Indigenous people. The explosions on the rock-covered Cuchumá Hill (also known as Tecate Peak) began in early April and have continued during the past week, according to residents of Tecate, a municipality in Baja California that borders California. Authoriti…