Well, think of it this way...let's say you live in New York City and you have two baseball teams (political parties) to choose to be a fan of...Mets or Yankees. You choose the Mets because the Mets have 6 team members (issues) of which you are a HUGE FAN (you hold these issues dear to you). You aren't a fan of the Yankees at all because they don't have any team members that you are a fan of. Then all of a sudden, the Mets trade your FAVORITE 6 players whom you are a HUGE FAN of and don't offer a good reason. Why would you feel slighted by the Yankees? You never expected anything from them in the first place, because you were never a fan of their team. Does it make any sense to get upset at the Yankees?
Uh I would be upset with the Yankees in the first place, they are the adversary.
A corrollary, should I have gone and helped the nazis, because I was mad about Patton being reprimanded.