Blacks and Latino's have ALWAYS voted Dem,
always. Based on pre-election polls Trump actually outperformed with women, blacks and Latino's. A basic example was a huge increase in early Latino voting in Florida, a key swing state that pretty much all the pundits predicted that these early Latino turnouts meant Hilary would take. As it so happened Trump outperformed with Latinos (or essentially Cubans) and took this state.
Watching CNN and TYT's have to call Florida for Trump on election night was hilarious as you could start to see their sphincter's starting to tighten a little, no worries though because they still had Ohio, Pennsylvania etc in the pocket
EDIT: just found this TYT election-night video they say on the exit polling Hillary 'only' won 65% of Latino votes.