Sometimes a picture is worth a 1000 words... https://magaimg.net/img/7lxo.png
When the demonically possessed begin to lose their control they take on a feverish dazed look. When confronted by a Christian with discernment, the hatred emanates out of their eyes. They lose their abilities to make up believable lies and sweat noticeably. Their behavior becomes erratic and discernible to others. Depending on the societal environment it sometimes takes awhile before they become ostracized and outcast by peers. In Congress this can take awhile since there are many such entities circulating in and around the hallowed halls of power and pretense. At some point, however, cowardice takes over and they will feign sickness or have a nervous breakdown to gain pity. It is good at this point to have some Christian Crosses handy with some Holy Water. This may calm them or agitate them further. If so then call the police or have an ambulance take them away.