In this 21st century certain words are now dog whistles that symbolize codes.
According to Wikipedia, “acronyms and abbreviations can be considered codes, and in a sense all languages and writing systems are codes for human thought.”
For instance, the words third world countries was originally coined during the cold war to signify those nations that were aligned with the Soviet Union.
After the end of the cold war, the neologism of third world countries was used to signify nations that had not advanced economically and whose people were perpetually unable to get enough food to sustain them, thus needing aid from prosperous Western nation countries.
The meaning of the word euphemism is according to Oxford Dictionaries a mild or indirect word or expression substituted for one considered to be too harsh or blunt when referring to something unpleasant or embarrassing.
The third world countries were often privately referred to with the euphemism or neologism to connote hell hole countries.
Most recently in 2018 POTUS 45, according to Senator Dick Durbin used the euphemism that connotes shit hole, but POTUS 45 claims he used the neologism that connotes ass hole.
All of the above caused a world wide furor.
Every major media source world wide feigned the euphemism that connotes shit hole with the word racist.
A racist is a person with a prejudiced belief that one race is superior to others, however a racist is also a bigot which connotes a prejudiced person who is intolerant of any opinions differing from his own.
All of the above fits the definition of dog whistle politics.
Figuratively, a dog whistle is a coded message communicated through words or phrases commonly understood by a particular group of people, but not by others.
Our country is divided by the 2 political parties unable to govern because a variety of all of the above code words are used to tar and feather.