I have only been to Baltimore once and that was for a week 50 years ago. It didn’t look very good to me then, I’d hate to think how it must look now.
50 years ago Baltimore was a great city; my mother lived there and as a 6yo took trollies alone into the city. What you’re probably talking about is the blue-collar and industrial areas (such as the “Inner Harbor”) that weren’t so pretty, but not dangerous.