Leonard Pitts: Generosity is good. Greed is only greed.

Greed is good.That, you may recall, was the mantra of corporate raider Gordon Gekko in the 1987 film, “Wall Street.” It came to symbolize the rapacious gluttony of that era - and its rejection of the dewy-eyed idealism of the 1960s.Well, 1987 was a long time ago, but Gekko’s cynical watchword feels as timely now as it ever did. Indeed, a quick tour of recent headlines suggests that, if anything, he wasn’t cynical enough.In Washington, Donald Trump stalls the transition of