Serves him right. According to the latest opinion polls from South Carolina, less than 20% of the Black Democrats are supporting Bernie, compared to 60% plus for White Democrats. In every southern state, the situation is the same. The blacks hate this guy like the plague. On the other hand, Bernie is leading in the overwhelmingly white states. In Vermont, he is leading 83% vs 8% against Hitlery.
Now compare this, with the unexpected and overwhelming support Donald Trump is receiving from the Hispanic Republicans.