The Ethical dilemmas facing The intelligence community of national security versus civil liberties?

How do you feel about the ethical dilemmas facing the intelligence community of national security versus civil liberties? During INTL305, the bulk collection program by the NSA was introduced to an ethical nature of the program. In the true fashion of most ethical dilemmas or discussions, it brought up viewpoints that mirror concepts of a trolley dilemma. Additionally, it brought forth the idea and concept of Machiavelli in which the ends justify the means.