I agree it is indeed sick but putting it into context it is just a few out of many millions. Shame they get all the publicity tarring everyone with the same brush. But it really isn't anything new. Boy bands have always had a few insane obsessive fans. I worked with one many years ago and that was Paul McCartney fan from the Beatles
. Just we didn't have social media for the whole world to see how badly they behave.
I do wish someone would tell their parents!!