The wicked, in their pride, 

see wickedness in others

  "These six things the Lord hates, yes, seven are an abomination to Him: A proud look, a lying tongue, hands that shed innocent blood, a heart that devises wicked plans, feet that are swift in running to evil, a false witness who speaks lies, and one who sows discord among brethren." (Proverbs 6:16-19) 

  The wicked are often prideful, thinking themselves better than others, and finding faults in others, and demanding that those others correct their ways. They lie about them, and seek to harm them. They devise ways to defeat them, and bear false witness against them. The wicked stir up hatred against others, sowing seeds of discontent among mutual friends.