Because, the south came first and the Clinton machine made certain everything and anything pertaining to Sanders was scorched earth.
Do you know the #1 reason he wasn't voted for in the south?: 'Who IS Bernie Sanders'?
No it wasn't the ignorant darkies..it was the elite whities (along with media) who manipulated the contest, because if the darkies knew they had a choice (and what his platform was), it would've been Sanders. Not everyone follows politics like we do.
It was KEY to not report on him and the media was to blame.
I think its really funny how they are all crying about Trump, when MSNBC, CNN were basically Clinton News Network and reported little to nothing on Sanders. So much so, people were complaining in comments that they were biased toward pragmatic anointed one.
Now..debate me.