Every person -> is either saved or lost -> is either a wheat or a tare -> is either going to heaven or going to hell -> is either a ChildOfTheHolySpirit or a ChildOfSatan
What a person does with the LordJesusChrist makes all the difference.
We sometimes too directly associate the SpiritOfAntiChrist with the Beast of Revelation. Yes, the Beast will embody that spirit but he is not the originator of it. The Jews were - they denied that Jesus is the Messiah, the Christ - even to the point of crucifying Him.
In Matt 23:38 we hear Christ cursing the house of Israel. Why? Because their rejection of Him was simultaneously an invitation for the SpiritOfAntiChrist to take over their society.
The SpiritOfAntiChrist is not easily overcome. -> It is different than being ignorant of Jesus. -> It is different than worshipping another god or following another religion.
To be AntiChrist is to have been informed of the Messiah, Jesus, yet knowingly and willfully rejecting Him as Creator, MightyGod, Saviour, Lord and King.
Recognize the SpiritOfAntiChrist in the people you interact with. Such will eventually align themselves with the Beast who will begin genocide of Christians.