In general I wholeheartedly agree. But if the person in front of you has done or advocated for things that cause harm or is themself a horrible person then I disagree.
the current conflict in the middle east shows why this doesn't work in the long run.
despite what a generation that grew up consuming Marvel films was led to believe, not every conflict is a clearly defined superhero-vs-supervillain, good-vs-evil affair. eventually, you will be the one who, according to some, is advocating for things that cause harm and is considered a horrible person.
I feel like the parent comment is pretending to be deep and meaningful but is really just rehashing the 'both sides are the same' argument with a side of 'everyone is entitled to their own opinion'. It's nice to say that we should judge everyone for who they are, but if who they are is a vocal member of a group that wants to hurt other people, that's all we need to know to judge them. Pretending otherwise is silly.
We all have our less enlightened moments. Better we not afford ourselves easy intellectual justifications for being our worst selves.
As the quip goes: the greatest evils are perpetrated by those most assured of their own righteousness.
Edit: Or in video form. Beginning summary: "brick suit guy" was apparently an extremely aggressive heckler of the media at Trump rallies. https://m.youtube.com/watch?v=fRSIv7alUZ8&t=95s
When the politics of a nation shift so far in one direction we get into a situation where supporters of that shift don’t deserve respect. Stalinist Soviet Union is an extreme example of this.
And how do you feel about them feeling the same about you?
Mutual righteous hostility is why ethnic and religious wars simmer forever, because there's always a convenient justification for acting violently towards others (and them towards you).
I don’t do anything at this time. But I understand why there are those who do have vitriol for supporters of a rapist who lusts after his own daughter. There are times when a nation’s society fractures as the social cohesion evaporates. We are beginning to be in such a time in the U.S. Well, it appears that way to me. Only time will tell.
When your creed is basically "I only hate bad people", you have given yourself permission to hate anyone and feel righteously justified about it. And you'll never feel the need to empathize because bad people always deserve whatever bad things happen to them.
You don't need to love everyone unconditionally, but clearly more neuance is needed.