Amid all the recent allegations of sexual harassment, June Thomas takes a look at how the issue is depicted on TV. “Watching television is something that millions of Americans do every night,” she says, “so storylines about sexual harassment can set a tone for our shared ideas on the subject.” How do the writers of “Mad Men,” “Great News”, and “The Office” tackle the issue and mine it for laughs? Have these depictions evolved since the days of “The Mary Tyler Moore Show?”