Surely coercion is ok when the parent is right and the child is wrong?

Being fallible implies that we can be mistaken including when we feel certain that we are right. And because we are fallible, there is no reliable way to know who is right and who is wrong. Disagreements can either be resolved through reason, or they can be dealt with coercively. So no, feeling that we are right does not justify coercion.

Reacting to an angry child

When a toddler hits a parent, should the parent communicate their honest reaction, whether it be showing hurt if they’ve been hurt, or any emotional response, such as feeling anger or sadness?