What is the definition of Populations Macabre?

"Populations macabre" is like saying a bunch of spooky, unsettling people have gathered in one place, creating an atmosphere so grim it could only happen in a horror movie set during a plague. Now, here's a chilling example: "The macabre populations of the abandoned asylum echoed with the whispers of forgotten souls, making it impossible to shake off the feeling that we're not just observing, we're participating in a macabre dance of the damned."