Here's my theory: Extraterrestrial beings probably know the kind of people that live on earth. Earth is full of greed and people who strive for more power over anything. I would stay as FAR AWAY from this planet if I knew anything about it, which I'm sure they do. Severing communications between you and a hostile, primitive life-form is, in the end, the smart thing to do, isn't it?

This is where violence belongs, in games, not in the real world. Case closed :-

Violates freedom of speech. 'nuff said! However, I produce facts. Allow me to plagiarize: "Freedom of speech is the freedom to speak freely without censorship or limitation." "The right to freedom of speech is recognized as a human right under Article 19 of the Universal Declaration of Human Rights and recognized in international human rights law in the International Covenant on Civil and Political Rights (ICCPR). The ICCPR recognizes the right to freedom of speech as "the right to hold opinions without interference. Everyone shall have the right to freedom of expression"." Period!