I only know a little bit about it, so the fifth amendment is the right to remain silent, Miranda rights and double jeopardy. while the six amendment it right to a speedy trial with jury for criminal cases. In that case Miranda was accused of kidnapping and raping an 18 year old, they took him in without telling him his rights which means that he did not know he could remain silent, they made him talk but since they did not tell him his civil rights he won the case. Which created the Miranda rights. Now double jeopardy means that they can't accuse him of the same crime. That's all I know and I hope this helps a little, I can't cite anything cause I got this off my government teacher.
I believe it is lonely because one of the line says "I took the one less traveled by," and I can see it sounds like the narrator is feeling lonely.
