Hate does have a place.

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Have you ever been hurt?  Physically, emotionally, it matters little.  Pain is the first thing you feel.  Sometimes you see it coming, sometimes you don't realize what is coming until you can feel nothing else.  All else escapes your thoughts as you focus on figuring out what is wrong and what to do with or about it.  Unless you are very well trained, experienced in handling pain, or better both, you may do some... really stupid things.  Or, if you are well trained, you swallow hard, end whatever is causing the pain, treat the pain directly and immediately if the cause is finished, find a safer place to deal with it, or just keep going until you can do something else while mentally checking the pain receptors off the list of things to do while you do what you must.  The thing is, pain lets you know you have a problem.  It is, while a thing of it's own, also a messenger.

Hate, too, is a messenger.  For most people, who strive to live a right life, it means something is wrong.  It is, if I had to qualify it, a type of pain.  It means people see something is wrong and is a cry out for justice.  The thing with hate is that it can be twisted.  Being an emotional response, and that it comes without a clearly visible cause always, some people have learned to manipulate this sense of injustice that others have.  But hate is not wrong, it is merely an, or the, initial stage of understanding that something is terribly wrong.  Like physical pain, there is a cause, I would say a very good reason, to feel such a thing.  The problem comes with dealing with both the feeling and the cause.

An example of how hate can be manipulated to evil ends?  Feminism.  Feminism, as it has come to be understand in modern parlance, is the notion that women are equal, in all ways, to men.  Oh, when confronted well, the sellers of the notion will give and take about this and that, but will never surrender the notion, no matter how plainly it has been disproven.  Because feelings.  The underlying cause of modern feminism comes from self loathing.  That a woman really can't do what a man does is seen as a failing.  That failing turns to a hate.  And that hate is used to fuel a political movement based on a lie.  And that movement leads to all sorts of evil, both to legislate something that isn't possible, and to cover up any proof that it is a lie.  What is missing, I think, for many women, is the understanding that while women can't do what men do, men can't do what women do.  The need to be equal is silly, when considered in full.  What is funniest of all, is that those who support modern feminism, which tries to make men and women the same, also in the next breath propose to support... multiculturalism... or... the very differences in a general population as being equal (which is also untrue) that they are trying to quash between the sexes.  The only thing that supports either notion, however, is pure, untreated, never maturing, hatred.

On the other hand, hatred can mature.  If a man is robbed, and hates for it... not just the theft of property, but also having been imperiled to his life, he can either become violent toward his robbers or those appearing as they do, or he can set out to create a system that doesn't allow for robbery.  He can seek legitimate justice through the courts, but he can also work to ensure his rights to self defense and attack cultures in which robbers are allowed in a more general way.  He can advise others on situations and places, work within politics to make sure laws are enforced evenly and positively, and do other positives.  But only if he takes that hate and forges it into something more mature.

Hate not only has a place, it is a reality we have to deal with, personally, socially.  Left to fester, rather than being treated and matured, it will yield much evil.  Tended, matured, and correctly aimed, it can yield great good.  The choice is ours.  If you encounter hate, approach it not as a crusader, but as a medical practitioner.  Find where the sore spot is, identify the cause, and perhaps offer some suggestions or a better healer if you know of one.  My guess is that family and friends, now that psychiatry has been weaponized against people and their constitutional rights, is the best method of treatment.  When the government corrupts the (potentially) better tools, once again depend on family and friends first.  Then again, you are going to get more honest, and practical, feedback.  No coddling, mostly.  Treat hate as you would any other wound, but find out how to get over it.  It is your reaction, you are now responsible for it.  Deal with it.