The definition of "vindictive" is to have or show a "strong or unreasoning desire for revenge." As an observer of the ongoing humiliation and persecution currently directed toward Donald J. Trump and anyone who supports him, what America may now be witnessing is an unparalleled display of malicious revenge. One might ask, "Who is driving this retribution?" The most obvious answer to that question is that it must be a self-absorbed force with a notorious reputation for spiteful exoneration. Judging from past conduct, that force would be none other than former president Barack Obama. This man thrives on adulation. Even...