Jennifer Finney Boylan: Bernie angry! Bernie smash!

I stood before a mailbox in Manhattan, holding my absentee ballot for the Maine primary. Bernie angry, I thought happily. Bernie smash.And I wasn’t even voting for him.No, my vote had gone to Elizabeth Warren, who from the beginning of the campaign had impressed me with her optimism. Watching Warren, I got the sense that even the long slog of a presidential run could be done with good humor and exuberance.There was a time when optimism was considered a desirable trait in politicians: Barac