Sorry, but I won't stipulate this point. If you want to make this assertion, you will have to prove it. Your own biases don't count as evidence.
while the existence of witchcraft and demonic activity can be demonstrated positively.
You keep saying this, but you have yet to demonstrate anything more substantial than the same type of evidence which exists for UFO sightings and alien abductions. Citing yet more anecdotal reports proves nothing.
Again, do you understand the distinction between anecdotal and empirical evidence?
Eyewitness accounts are the best empirical evidence of supernatural phenomena since videos and audio tapes would be rejected as fraudulent. Eyewitnesses would always be needed to confirm any mechanical recordings of the events.
I can provide you with plenty of examples of miracles or supernatural phenomena but you will reject them all because of your dogmatic, a priori commitment to materialism. It's logically impossible to present empirical evidence of supernatural phenomena to a dogmatic materialist.