“A prudent man foreseeth the evil, and hideth himself; but the simple pass on, and are punished.” Proverbs 27:12 (KJV)
The wise, the sensible individual; one who is wise in the LORD, will recognize evil, and turn from it; even hide themselves from it, when possible expose it, or run from it if necessary.
The non-sensible, simple, naive individual is similar to just ignoring the evil, going along with evil and even so far as “Hiding ones head in the sand”.
Evil: Anything that is against GOD, His holiness, righteousness, and Justness; anything that stands against the cross of Christ.
As Christians we must not ignore the evil, but when we see it hide from it, run from it, and expose it for what it really is.