https://www.researchgate.net/post/When-was-the-term-Revolution-of-Dignity-initially-used-in-reference-to-the-protests-in-Ukraine-in-November-2013-February2014

according to some research here, it started with far-right/fascist political leaders in Ukraine

Oleh Tyahnybok (literally a leader of the national-socialist party of Ukraine) seems to have been the first to popularize the term to a broader audience of Ukrainians. He's the guy in the picture with all the libs and doing the nazi salute.

https://en.wikipedia.org/wiki/Social-National_Party_of_Ukraine

The party combined radical nationalism, neo-fascist and anti-communist positions.