Epicurus was very concerned about telling the truth, but telling it with tact and kindness.  He thought philosophers used rhetoric to conceal the truth.  Ancient Epicureans prided themselves on politely pointing out errors or misconceptions to offer other people, something that requires huge trust and respect. There is a right way to criticize and a wrong way, too.

One of the problems with the anonymized web is that you get these people who give themselves bogus names that allow them to be rude, vulgar and hurtful. There is no excuse for this behaviour, although, surprisingly, others seem to tolerate it. I just looked at a blog where people were saying the most sexist, violent and disgusting things about Hillary. I am not a particular admirer of Hillary, but believe that she is not a bad person. I can disagree with the tendency of some of her views but remain courteous and thoughtful. What motivates these vacuous thugs online? Do they treat others like this in real life? No, they are cowards, upsetting others in anonymity.