When Working Whites are Angry Whites

Why is it when white people flock to someone like Bernie Sanders, or are jockeyed for by Hillary Clinton, it's the White Working Class?  When white people flock to Trump or just about anyone in the GOP field, it's Angry White Voters (usually men)?  Ever notice the difference? I'm sure I know the reason why.  But it's always fun to see the obvious played out in front of us.