Hell of a country eh when you have to be concerned about your life at every given moment. Was that in the city of brotherly love? There's no way to prevent everything. One can through awareness and a conscious diligence attempt to reduce some risk of being a victim by making decisions that remove some risk from the equation. Was the path the teacher was taking the only path? Not sure this has been vetted. Hell of a great society here we have eh.
Instead of the media being politically correct, report crime with all the facts and known evidence. If certain ethic groups are purporting the majority of X crime, that should be hidden from the details the public might be better aware of criminal risk in and around where it is they live.