It is my right to claim what others possess.
Evil characters don’t necessarily go out of their way to hurt people, but they’re perfectly willing to take advantage of the weakness of others to acquire what they want.
Evil characters use rules and order to maximize personal gain. They don’t care whether laws hurt other people. They support institutional structures that give them power, even if that power comes at the expense of others’ freedom. Slavery and rigid caste structures are not only acceptable but desirable to evil characters, as long as they are in a position to benefit from them.