Yawn, you still in primary school? Oh wait, anc supporter. That explains it.
Name calling is abusive or insulting language referred to a person or group, a verbal abuse. This phenomenon is studied by a variety of academic disciplines from anthropology, to child psychology, to politics. It is also studied by rhetoricians, and a variety of other disciplines that study propaganda techniques and their causes and effects. The technique is most frequently employed within political discourse and school systems, in an attempt to negatively impact their opponent.
As a cognitive bias in propaganda 
Name calling is a cognitive bias and a technique to promote propaganda. Propagandists use the name-calling technique to incite fears or arouse positive prejudices with the intent that invoked fear (based on fearmongering tactics) or trust will encourage those that read, see or hear propaganda to construct a negative opinion, in respect to the former, or a positive opinion, with respect to the latter, about a person, group, or set of beliefs or ideas that the propagandist would wish the recipients to believe.
The method is intended to provoke conclusions and actions about a matter apart from an impartial examinations of the facts of the matter. When this tactic is used instead of an argument, name-calling is thus a substitute for rational, fact-based arguments against an idea or belief, based upon its own merits, and becomes an argumentum ad hominem.
Don't stop now, we expect nothing less from anc supporters.