Which one of your rights is assaulted when Google, a private enterprise, decides to not show you certain links?
Is Google one of the country's owners? Do they pull the strings of any of our lawmakers in D.C., lawmakers that were hired (aka voted in) by the citizens of this country? If they are controlling lawmakers, like other highly influential corporations do, then they should be considered to be acting on behalf of the government and the people that the government is supposed to serve. And thus, they should be required to observe and submit to the same safeguards and restrictions outlined in the Bill of Rights and the rest of the Constitution to which anyone else working under the banner of government is subject.