Why Red Sox fans are angry about the Mookie Betts trade -- and why they shouldn't be

There's anger in Boston. At the Red Sox. At Mookie Betts. At the baseball gods. But how justified is it, really?

source http://www.espn.com/mlb/story/_/id/28626763/why-red-sox-fans-angry-mookie-betts-trade-why-be