What is dark tourism, in which tourists go to see ruins and accidents, what is the connection with the Wayanad landslide case?

Even on the seventh day of landslide in Wayanad, rescue teams are searching for people trapped under the debris. The trend of people being found alive even amidst more than 380 deaths continues. Meanwhile, Kerala Police prohibited dark tourists from coming on social media. Police say that this hinders the relief work. Dark tourism may