Because leftists are numerous and motivated enough to cripple society. Leftist executive in charge? They scare all neutrals working under them into following their orders. Neutral in charge? Many grunts of the institution are leftist zealots and will disobey, undermine, sabotage, and disrupt the institution until it falls apart or the executive kneels.
why would you let them back in, let alone give them access to kids?
Because leftists are numerous and motivated enough to cripple society. Leftist executive in charge? They scare all neutrals working under them into following their orders. Neutral in charge? Many grunts of the institution are leftist zealots and will disobey, undermine, sabotage, and disrupt the institution until it falls apart or the executive kneels.