Defiant Hong Kong leader Carrie Lam Cheng Yuet-ngor has said she will not withdraw the controversial extradition bill or resign as chief executive, despite mass protests that gripped the city on Sunday.Organisers said more than a million people took to the streets to show their anger at legislation that would allow the transfer of fugitives to jurisdictions which the city lacks an extradition agreement with, including mainland China.But Lam stuck to her guns, and despite dismissing calls to…