Strange event

Friends of mine who are long standing, competent mediums have told me of a strange happening recently. They host public ghost hunts and always at the beginning hold a protection circle. They have done it hundreds of times without an issue. However on an event about 2 weeks ago they were conducting the protection circle in a venue they have succesfully worked in before. They were asking people to picture the White light of protection. Now the people who were affected are also seasoned investigators and know what to do.

What happened was there aura's changed from White to Black and they started to project Black light. My friends being good mediums always put out enough White light to cover the group regardless. Howeevr when it reached these group of people it started to go Grey and then Black.

[Adrienne]

Strange indeed ~

so what happened when it turned black? I assume that they did not have protection right?