Remarkably, the Greek word for demon, "daimon," means "TEACH." Demons work their will among the human race via TEACHINGS. That's because the whole world is one giant information war.
The information war is a war of true information about God vs. false information. Satan knows this. Thus, the speciality of his subordinates (demons) is TEACHING. This is evident in the titles very etymology.
Do you expect to find these false teaching about God in bars or drug houses or strip clubs or brothels? Look again. Satan
distributes his most deceptive falsehoods through the agency of the one false religion that has hijacked the names of God and Christ: Christianity.