What, according to Socrates, is there to fear in doing injustice? According to Socrates, what does it mean to do injustice to ones city, to ones family?

Consider the way in which Socrates lived, especially the ways in which he conducted himself during his trial and as he anticipated the execution of his death sentence.

Do you think that Socrates was right in his belief that there is much to fear in doing injustice? In particular, to what extent does his view about doing injustice depend upon his belief that there is severe punishment in the afterlife for those who have done injustice? Please be specific and refer to pertinent texts in your answer.