The Radical Left
As all politicians know, language is a powerful thing, and there is no law that says that the meaning of words can’t be twisted so as to favor a certain person, party, etc.
Aristotle wrote his book “On Rhetoric” on the art of persuasion, somewhere during the 4th century BCE. We’ve been at this for a long time.
When the phrase “fake news” was coined soon after Trump was elected in 2016, it originally applied to the torrent of lies that were spewing forth from the president. Unfortunately, Trump was able to subvert this to mean the precise opposite, i.e., everything that was coming from the mainstream media.
As expressed in the meme here, Republicans have redefined the word “radical” to apply to everyone with even moderately progressive ideas: common-sense gun laws, a woman’s right to an abortion, quality public education, etc.