Following the death of his label Funk Volume, the rapper went off to start another label. Last week, he declared "The Purge" in his latest track. It was the first many heard from Hopsin in a long. To the uninitiated, go-go music seems indistinguishable from funk. What sets it apart are a specific conga. That was the difference," he said. The purge was especially damaging because go-go is all. Purging…