First, you will discover that people in general are extremely reluctant to admit error. People will defend an opinion or an action until the end, even if every bit of logic and evidence runs contrary. Sincere apologies and genuine admissions of error and wrongdoing are the rarest things in this world. There is no point at all in demanding apologies or in becoming resentful when they fail to appear. Just move on. Neither should you expect to always be rewarded for being right. On the contrary, people will often resent you and try to take you down.
Via Tucker on the Young Unemployed, David Henderson | EconLog | Library of Economics and Liberty (and the subtitle is via R. A. Heinlein).