Can you explain here a brief historical account.
According to my understanding this movement, critical thought, historical approach or critical school commenced in 1970 to amend power-based or elite based flaws at historical grounds (Especially after colonialism and emperialism, third world people found themselves lost. They were without history (i.e., without identity) of their own. I know, I am making here a mistake by using the fuzzy term third world but it is, for me and for most of the people, a general term to distinguish people of undeveloped country from the people of most advanced and powerful countries. Then from 1990, the term became a weapon, a tool, a methodology to voice the voiceless at academic, social, political, cultural etc grounds. Now, this multidisciplinary approach has no boundary and is applicable for all people marginalized in any country at any level.
How far am I correct? What is the difference between its initial objective and now its application in modern time?