Very good point.
I'd say this is precisely the time to study more, to learn more, to cultivate our intellects more.
It is precisely in times of obscurantism, when lots of people think their opinion, wrong or misinformed as it may be, is as valid as a solidly backed up one, when the sober minds have to speak up and provide spaces for open and civilized discussions about the pressing issues of our time.

Every time a supporter of the chavista government, for instance, tells me that supporting this government is an opinion and therefore should be validated and respected, I ask them, would you support and validate the opinion of someone who thinks that it is ok to beat women, or rape children?
Because those are also opinions.
Some people opine that gays should be eliminated from the face of earth, that blacks or other minorities are inferior and therefore should be subjected by other races; there are people who opine that the oppression of certain regimes is bad, but that of others is good (good empires vs. bad empires).
Some opinions are just wrong; they defend immorality and injustice and therefore should be combated and proved wrong with solid evidence and arguments.

Many injustices keep being commited because way too many people remain silent about them; because they are afraid to speak up, becasue they feel they have better things to do and every one should be concerned only about thir particular issues, or because they think their voices will not be heard.
These times we are living are no times for conformism. That always precedes great injustices.