Did he win that demographic in Nevada? https://www.washingtonpost.com/news/the-fix/wp/2016/02/22/did-bernie-sanders-really-just-win-the-hispanic-vote-in-nevada/
it's unclear, at best, and it looks like he lost narrowly.
Regardless, even though no demographic is cut and dry, and he does better with other minorities, he is still clearly behind, overall, in latino vote too.
Now for sure he performs worse with minorities in the south, and african-americans are his worst racial demographic, but let's not ignore the fact that the minority vote is still killing the guy. I think I had this debate an age ago with bo and someone else on the forum, who seemed convinced it wouldn't be so bad. People need to wake up and smell the coffee, whether or not it tastes like piss to them.