Yea, the refs were awful. They made one poor call after another.
But not everything can be blamed on the refs. Where was the United States? They were sleepwalking until the 60th minute, when Johnson was put in. And after that they didn't step up. Yea you can blame this shit on the refs all you want, but ultimatly what the end results come down to is the effort of the team.
Oh, and everyone was diving. That's something that EVERY team in the world does. It's a big problem in soccer, but you know what? Ghana was yellow carded because of diving, and the ref didn't call fouls for many of the dives, so you can't blame the loss on that