An interesting talent people seem to have is the ability to assume understanding. Repeatedly, I have seen people leap to the defence of someone or a definable group on the sole basis that they think they understand where they’re coming from. Even without specific knowledge of the situation, they feel a kinship, especially if there are some similarities (no matter how tenuous) to circumstances they have experienced.
A father separated from his child wholeheartedly supporting all fathers deserving unlimited access to their child, with no recognition for the fact that because he is a good father does not mean that all men are. A employee unjustly terminated feeling that all employers are sent from hell to torture employees with no consideration of the existence of employees who are dishonest, unproductive or generally disruptive. A woman who has been heartbroken one time too many feeling that all men deserve to be manipulated and walked over. These people will watch a scenario from outside and assume that because they experienced a particular circumstance, their experiences hold true in every other scenario.
One of the lessons we must learn in life is how to remove judgement without knowledge. It is unfair to make generalisations because every situation will have some unique characteristics. If you don’t know the details of a situation, your opinion is irrelevant. People make their decisions based on their own truth, which we must recognize may be different to ours.