Central to political persuasion is the usage of words in modern language, how traditional definitions are subverted until the word means the opposite of the original intent. What is fascinating is how, by the time the word is accepted under its new guise, it is still emotionally connected to its origin.
Trigger words for today have long since been undergoing a slow transformation that has actually switched definitions but not the emotional attachment to what it once meant. As twisted as this sounds, it's primary to converting and controlling public opinion. As an ideal illustration of this phenomenon are two words bandied about by media, politicians and pundits: Liberal and Reactionary.
We all know how the terms are currently applied, but are we aware of how the careful usage has preserved the emotional response of which word represented good and which was considered bad? Examining modern dictionaries, it's found that the etymology of these words is fairly well ignored.