I lived in Roland Park for >10 years and have, on occasion, run through Druid Hill Park. Crime there has definitely increased - during the pandemic, there had been multiple bikers mugged on the switchbacks since you can't get away, and there were also many urban youth gathering in the park. I ran there 3 times during Covid - one was early on a Sunday morning (maybe even Easter) and there were a lot families out so that was fine, but I had run there near dusk (once on the back hills, once on the switchbacks) twice and that was sketchy. the back hills were nearly pitch black, and I only encountered one other person (surprisingly, a woman with her face buried in a book) until I got near the pool, but when I ran around the zoo I thought I was going to get mugged or shot since there were many people gathering and there were no police around.