The phrase "a large scale movement" is correct and usable in written English.
You can use it to describe an event or activity which involves many people over a wide area. For example, "The protests against the government's policies were a large scale movement that spread across the entire country."
It is difficult to judge to what extent this is a large-scale movement.
Around 1050 B.C., having exterminated the coastal Canaanites, they began a large-scale movement against the interior hill lands, then mainly occupied by Israelites.
It was the start of what became a large-scale movement of cryptography out of the secretive offices of the National Security Agency and into the halls of academe and, later, makers of commercial cryptographic systems.
"There is a large-scale movement in anticipation of health care reform, where size becomes more and more important," said Mukesh Gangwal, managing director of Huron Healthcare, a hospital consulting firm.
This may provide a moment of relief in the course of a rigorous argument (as in the last movement of Mozart's Piano Sonata in C Major, K 330 [1781–83]); or it may allow the composer to expand the scope of a large-scale movement (as in the first movement of Beethoven's Symphony No. 3 in E-flat Major [1803; Eroica]).
A new study, the first to reveal the shift, has an answer: a large-scale movement of water between the Southern and Northern hemispheres.
"A large-scale movement of Women in Solidarity with Hijabs is my Christmas wish this year".
A large-scale movement toward climate-friendly agriculture is emerging to radically increase carbon sequestration, while building food security and resilience on farms.
The fact of the matter is that all the elements were in place for a large-scale movement of Central American kids across the border, with or without DACA.
