Is there anyone who doesn’t know about Donald Trump’s plans to build a wall between the United States and Mexico? Ronald Reagan, U.S. President from 1980 to 1988, had his own influential take on walls between states. We can assume that, Republican or not, he’s turning in his grave. You hear Reagan’s voice calling for the wall to be torn down. Mexicans, publicly insulted by Trump, are familiar with the concept – it’s not like the border has been open recently. Almost 10 years ago, the Mexican band El Tigres del Norte released the song El Muro (The Wall; 2007)) – not to be confused with the Pink Floyd song of the same title (1979).