COMMUNICATION STRATEGIES OF A HACKER

What "The Mentor" is trying to say is that no matter what we do or how we do it we're all exactly alike regardless of what other people say. He's saying that whatever we do other people are doing the same which is why he can hardly differentiate ourselves from others because we do the same exact thing as them. He's saying we are all alike by using the word 'damn' and 'They're all alike' repetitively to prove his point. His tone also seems aggressive which might help understand the excerpt. He's saying that whenever we do something we're see as criminals, but when people of power do something similar they claim to do it for our good and our benefit. He's saying that there is no difference between us that we are the same.