Throughout our lives we are members of all kinds of groups. Some of the groups we join, others we are cast into. Most of us like to see our group as being better than the other groups. We talk about how our group is better and how the other group needs to do this or that in order to "see the light". All of this is human nature.
Sometimes one group will decide that they have been too harsh on another group. They determine that by being so rough on the other group they have actually injured them. Because of the injuries to the other group there will be no more speaking ill of them. Anyone caught speaking ill of the other group will be punished. At some point, the protected group catches on and starts protesting any comments made by anyone that even mention their name in a bad light. Even truthful comments that mention them in a bad way are seen as being punishable. Anyone who mentions their name in a bad way is considerd to "hate" that group. The truth is swept aside as a means of protecting the group.
Be protecting the injured group, members of other groups are now injured. If the newly injured members of other groups complain, they are "haters". The "haters" may need to punished or at the very least, reducated.
What a crazy world we have built.