Michael S. Baird is a partner at Stotis & Baird Chtd. He writes in the wake of the recent scandal surrounding Virginia Gov. Ralph Northam, who is facing calls for his resignation over photos showing people wearing racist costumes on his page in a medical school yearbook.We don’t send someone to jail unless the prosecutor is able to overcome the presumption of innocence. We require proof beyond a reasonable doubt to take away somebody’s liberty. For all other purposes, the standard is “more probably …