There’s no Hareidi “movement”. There was no beginning to “Chareidism” except on Har Sinai; no particular person whose teachings they follow except Moshe Rabbeinu, and no particular Minhagim they perform. Chareidim do not follow any specific teachings of any specific Rebbi, nor do they believe in any specific values not already in the Torah. So there really is no such thing as a “Chareidi.” Those who people refer to as “Chareidim” have mostly never referred to themselves as such – in America you can go to Yeshiva from Kindergarten through Kollel and you will most probably never hear “we are Chareidi,” and you may even never hear the term used at all.
The term originated in Eretz Yisroel as a way to describe those who followed the Eidah HaChareidis as opposed to the Rabanut. But it has evolved, and has come to mean basically anyone who is not Modern Orthodox/Religious Zionist.