People sometimes say explicitly that they are fallibilists, but inexplicably they are ‘saying’ that they are infallibilists. They say people are fallible and not omniscient, but they act as if they think people see the truth yet are wickedly choosing evil.
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.