In a sense there is a positive tone because there is a hope that America can be a “great strong land of love,” but then it he uses words like “kings connive ” and “tyrant’s scheme ’' and “crushed .” The reality therefore is that there are people in power who are in control and deprive others of opportunities. Line 10 repeats the idea that America isn’t what it could be for him. So lines #5 and #10 share the same message.