Brazilians saw their dream of winning a World Cup on home soil disappear for a second time after allowing a record seven goals against Germany. Many left the arena in tears before halftime, too stunned to watch any more. The host trailed 5-0 before a half-hour had passed at the Estadio Mineirao in Belo Horizonte. The 7-1 scoreline was the worst defeat in the soccer-crazed nation’s history, dashing hopes of overcoming the national tragedy of losing the final game of the 1950 World Cup at home. Brazil spent $11 billion preparing to host the tournament, the first on home soil in 64 years, with the national squad tasked with delivering nothing less than a record-extending sixth title. Memories of the failure may last longer than the pain endured six decades ago when Brazil lost the final game to Uruguay in Rio de Janeiro’s Maracana stadium. “It’s embarrassing,” said Alberto Portugal, 56, one of scores of fans wearing Brazilian jerseys who were streaming out of the stadium mid-game. “We are supposed to be the team that plays beautiful soccer.” After the match, officials reported isolated disturbances with military police in Rio saying some fans fled a viewing party on Copacabana beach…