Evil is the policy of Satan. Evil incorporates the entire framework and philosophy, which is entirely and completely in opposition to God and truth. Wickedness is the activity of evil.
Those who reject truth, by default pursue evil in all of its broad array.
The shedding of blood, is the destructive objective of evil, geared towards destroying everything in accordance with the arrogance and selfish desire of Satan.
Evil promotes no one, and benefits no one, but uses everyone, in order to advance its own destructive end.
Evil appeals to the sin nature life, offering both excitement, which is false excitement, in hopes of fulfilling ones individual lusts, which is not a fulfillment. And therefore, this enticement, although it is false, appeals to those who want something for nothing, or the right to take at will, with total disregard for everyone but themselves.
Evil comes in many forms, including the great façade or deception, of peace and harmony and good, as well as the indifferent right to take or do as one pleases.
Often times religion is the mechanism that promotes evil activity, under the disguise of a righteous stamp of approval. Or government may be used as the mechanism to promote evil regulations, under the disguise of the greater good. And then of course, there are individual people that pursue evil activity, under the disguise of sincerity or good intentions.
And therefore, there are those who will hasten to pursue this course of life, with total disregard for anyone that gets in their way, or anyone that is hurt or comes to harm, as a result. And any who oppose the standards of evil, are ostracized with gossip or maligning, with bias or prejudice, and are removed if at all possible because they are seen as a hindrance to the advancement of the standards that an evil society promotes.
And when evil takes hold of a society, and becomes common place and common thinking, then it becomes easier and easier for a society to accept injustice and unfairness, as the reasonable price for maintaining the standards that a society has adopted.
The only defense and protection that society has in protecting itself from itself, is Bible doctrine, which when learned and understood and utilized, will allow the eyes to be opened, in order to see the true nature of evil.
But of course, people have to want truth, more than they want the easy road of evil. And that in itself can be a tremendous barrier and trap for individuals and for society.