Evil is in these world because it serves as a proof of loyalty to God who have given man the opportunity to make a choice between God and Satan, which is the single proof of whom you listen to and to whom you obey. Devil who is the father of all evil, has plans on daily bases to unleash his even plan on every child of God.Also God would not allow evil weather small or big to overcome his children and Believers..The evil spirit from the devil causes  many to practice evil. These evil ranges from individual to individual and exhibited in such a cruel and without the fear of God