San Francisco Mayor London Breed has lashed out at Good Morning America for saying it was 'too dangerous' to film in the city's downtown, claiming it is 'hampering' efforts to bounce back from the pandemic. ABC's chief national news correspondent Matt Gutman told viewers Wednesday he had been advised against appearing live from Union Square or the now-closed Westfield Mall for a segment on the spate of stores fleeing the crime-ridden city. 'It is worth mentioning that we are not at Union Square or the Westfield Mall this morning because we have been advised that it's simply too dangerous to...