NEW YORK — Even before she finished her first year as New York City’s top cop, Police Commissioner Keechant Sewell suggested she was frustrated by those who second-guessed her and told her things they would never tell a man. “You will get free, unsolicited personal advice,” she told a group of female cops. “Your hairstyle is wrong, you look tired, already worn out in less than a year. You should wear different clothes. “You’re not qualified — you are in over your head.” Her comments, during a dinner dance for the Policewomen’s Endowment Association, take on more significance now that Sewell, t...