Take for instance the opinion that human activity is heating up the earth. One has to be dismally uninformed to entertain such an inane-on-so-many-levels opinion. Informed people know that the mis-named "greenhouse effect" underlying this opinion is actually absorption and re-radiation of Infrared, and they know that water vapor, at fifty times the atmospheric concentration of Carbon Dioxide, absorbs and re-radiates fifty times more infrared, swamping any alleged contribution from the paltry 0.04% of Carbon Dioxide in the atmosphere.
Furthermore, informed people know that 97% of the Carbon Dioxide entering the atmosphere is created by non-human processes, and that if the entire human race were to disappear from the earth tomorrow, the resultant Carbon Dioxide reduction would be only 3%. And finally, anyone would have to be egregiously uniformed to be unaware that, for the last 15 years, the planet has actually been cooling down, not warming up.
The reason so many people adhere to such obviously false opinions is not so much that they are uninformed, however, as that they are deliberately misinformed. Very frequently, "opinions" are in fact no more than lies invented to propagandize the public in order to fool them into supporting some undisclosed objective. The opinions you hear people defending their right to, therefore, are most often nothing more than the parroting of propaganda.
And that propaganda most often originates in our own government – from our employees whom we have denied the right to even express an opinion, much less promulgate their opinions as propaganda.
When I joined the Marine Corps in 1952, I raised my right hand and took an oath to support and defend the Constitution of the United States. From that point on until I was discharged in 1956, I had no right to my own opinion. Conceptually, I was a slave to the citizens of the United States of America, whom I had taken an oath to defend, and to their Constitution.
Every Senator, Representative, federal judge, civil service employee, and President of the United States takes the same oath to uphold and defend the Constitution of the United States. Once you have taken that oath, you have no right to your own opinion until after you are discharged from your responsibility to serve the best interests of the People of the United States as specified in the United States Constitution.
Erick Holder has no "right" to employ his opinion that "Blacks are the victims of White racism" in his enforcement of the laws of the United States. He took an oath to use his office to promote the precepts enshrined in the Constitution of the United States – to the exclusion of any personal "opinions."
Lois Lerner, so long as she worked for the IRS, had no "right" to her opinion that anti-Fascist PACs were evil. As an employee of the People of the United States, she had no personal rights – only a duty to fulfill the oath she took to uphold the interests of the People of the United States and the law of the Unied States as stipulated in the Constitution.
If you have taken an oath to uphold and defend the Constitution of the United States, you have thereby forfeited your right to your own opinion. Your responsibility cannot be diluted by opinions – whether genuine or manufactured – because therein lies anarchy. You must, as you are being paid to do, subjugate any personal preferences or prejudices to the duty to the American People that you swore to fulfill – to uphold and defend the law as codified in the Constitution of the United States, whether you agree with it or not.
And if you are not a public servant, you are still not entitled to your own opinion. You are entitled to prefer an opinion to actual knowledge, if you would rather delude yourself than educate yourself. But you are not entitled to pander your delusions to the detriment of others.