Maybe what the left needs is the sociological equivalent of Depakote, a mood-stabilizer, or Prozac...
I think it's called art :) Music, dance, theater. Lessing wrote a most wonderful treatise about this: "Letters on the Aesthetic Education of Man." It's a bit thick with eighteenth century abstract verbiage, but underneath it all, there's a marvellous argument about how to sow the seeds of revolutionary thought and feeling.
Joanna
