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hatching right now, a deadly shooting at a dallas hospital sparking outrage today. the suspect, on parole and wearing an ankle bracelet. plus, a pledge to keep the student debt relief program moving full speed ahead, just as a court rules to hit the brakes for loan cancellations for now. and which major retailers won't be open on thanksgiving day? you're live in the cnn newsroom. hello, everyone. thank you for joining me. i'm fredricka whitfield. in new york, officials say they're working to tackle the rising crime on the subway system. the city has sewn a seen a wavef crimes like ...

Is done this type of thing, blame it on their enemies, and then retaliated. so what i could imagine happening here, and this is not an unreasonable analysis, is that russia will use a dirty bomb on their own territory, blame it on ukraine, and then retaliate with nuclear weapons. they've done this type of thing, not with nuclear material, but other ways before. this is a standard on raoperati procedure with vladamir putin and his government. >> so russia is battering ukraine's power grid. just in time for these harsh winter months. they're causing rolling blackouts, widespread internet outages...

Totality of public safety. what we have found in our analysis is that when that police officer makes that quick apprehension, he's preventing the repeated crimes. there's a small number of people who are repeated -- committing these crimes. >> the mta is ensuring there are security guards at the turnstiles as well, so they can monitor situations. if someone hears something or sees something, they have one more person that they can speak to. >> reporter: so deter is the idea here, the idea that if you see more police officers and more security at those train stations, that the perception, the f...