Communists always aim to separate children from their parents so that the state can begin indoctrinating them from infancy with the perverse notions of their ideology. Their primary perverse notion: absolute selflessness.

They try to instill into people the idea that the collective comes before the individual; that the individual has no identity unless he's part of the collective and is giving everything to it, exclusively. In other words, others' lives, upkeep, and protection is paramount...just like a hive. The entity that directs this regimented drone society is, of course, the communist state.

Communism runs contrary to human nature. The only way they can make this perversity work is by wrenching families apart; seizing the young for indoctrination; killing millions of their own citizens; and then, terrorizing the remainder into broken, demoralized, silent acquiescence. The result of this distopia is absolute 'seige stagnation', rampant alcoholism/drug use, suicide and precipitously collapsing birthrate.

Tldr? Leftism is a death cult.