What is chapter talk about Residential School take children from their family?

Chapter 12 illustrates the separation of family. Saul talks about different children like Shane Big Canoe or Sheila Jack who are severed from their families and humiliated at St. Jerome's.

Shane Big Canoe. They brought him to St. Germ’s wrapped in ropes. When they untied
him, he promptly ran away. I remember standing along the rail of the stairway with a
dozen or so others when they brought him back. Two burly men from town had wrestled
him into Father Quinney’s office. We heard slaps, the whack of fists on flesh, the sound
of wrestling and the crash of furniture. Then silence.