Some photos of the war in Syria
Fortunately or unfortunately we live in a democracy, and that means that EVERY opinion should be respected, even if it contradict yours, even if this opinion is the most fascist, racist, sexist or whatever of everyone. You can explain your point of view and try to make the close-minded understand that there are better options that the ones they have, but if they don't want to listen, don't impose your opinions. Just let them think what they want to think. You've tried, but if they continue with their close mind, then it's not your fault.
Respect everyone. I think you want to be respected too.