As children of the Most High God, it is absolutely right that we not only address demons but rebuke them and cast them out as well.
Do you mean christians ought to cast demons out of other christians Or non-christians? In the pentacostal church I used to attend years back they taught that christians are to "enforce" God's will and in that sense, God was said to "obligate" the faith of the christian but not do anything unless a christian "invited" God into that given situation. So a demon can indwell a christian and will not leave unless they are "told to leave" by the authority of the "name of Jesus" and strangely only if you address the demon by their correct name, lust, rebellion, fear, anger...etc
Anyway, demonology is a complicated mess if you ask me, the bible doesn't make it that confusing.
Eph 6:11 Put on the whole armour of God, that ye may be able to stand against the wiles of the devil.
6:12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.
6:13 Wherefore take unto you the whole armour of God, that ye may be able to withstand in the evil day, and having done all, to stand.
6:14 Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness;
6:15 And your feet shod with the preparation of the gospel of peace;
6:16 Above all, taking the shield of faith, wherewith ye shall be able to quench all the fiery darts of the wicked.
6:17 And take the helmet of salvation, and the sword of the Spirit, which is the word of God:
6:18 Praying always with all prayer and supplication in the Spirit, and watching thereunto with all perseverance and supplication for all saints;
Darren