The proudest soccer team in the world was crushed on Tuesday before its own horrified home fans, as if it were some third-tier interloper from Asia or the Caribbean. Brazil didn’t merely lose to Germany, it fell apart at the seams during a humiliating 7-1 semifinal defeat at Belo Horizonte. The Germans scored five goals in 18 minutes of the first half; four of those goals came in just six minutes — three of them within three minutes. After all the prematch concern expressed about the injured Neymar, it turned out that Brazil more badly missed its defensive stalwart Thiago Silva, suspended for this game after getting a second, silly yellow card against Colombia. “Who is the coach? Who is responsible?” Brazil manager Luiz Felipe Scolari told reporters afterward. “It’s me. The catastrophic result can be shared with the whole group, the players will tell you. But the choice, the tactical lineup, I did. So the person responsible is me.” The one-sided defeat was historic in scope, the worst for Brazil since it lost, 6-0, to Uruguay in the 1920 South American championships. Oscar put in a final, meaningless goal in the 90th minute to avert a complete shutout, hardly…