Minutes after the last kick and punch were thrown in a fatal beating in a public park in Shenandoah on a summer night in 2008, the cover-up began, federal prosecutors say. Instead of investigating the vicious beating of Luis Ramirez, police officers of the small borough helped the young men conceal evidence and concoct a less-damaging version of what happened that night, advising the young football players that they "needed to get their stories straight" because the man they had just beaten might die, according to an indictment. The Mexican immigrant's last conscious moments were spent hearing "Go back to...