Even with absolute knowledge of right and wrong it would not be possible to end all wrong without totally controlling what others can possibly do. To make it so that another cannot possibly do wrong is to strip them of all choice. What violent measures would be called for towards such an end? Would not such measures, aimed at eradicating all wrong, be themselves wrong?
We do not have absolute knowledge of right and wrong yet we set our minds to controlling this group or that group by force or threat of force by proxy of a subset of the human race we call government. Lacking in knowledge, and hiding behind the violent actions of others on our behalf at times, we believe we stand for what is right and good, but are in truth a greater source of evil on mankind than any man who we may point to and declare to be a wrongdoer.