Can you change the fact that evolution has fallen behind on the civilazation we're trying to create? As a matter of fact, you ask exactly that that I deemed naive in my previous comment. There is nothing you can do. This is something that has to fade away over time, no matter how much I hate to say that, but I'm afraid that is the only truth I can give.
Hating people of another group used to be an essential instinct for survival. In current days, we cannot afford to live by that instinct, but as evolution is always a matter of thousands, if not millions of years, you can imagine how much more years we'll need.
All you can do is keep people aware, and hopefully this will make other people see that, and that will take a very very long time.
Violence, plundering, shitting on great historical people, breaking down statues, and all that, can all be taken up as a provocation, and when you provoke people they will overall only be too happy to return the favor, and strengthen their believes, and also cause them to become just as violent in the end.
And people who truly hate, for the sake of hating, just following their cavemen instincts, are most often not willing to change their minds. Because stopping to hate, is admitting they've been wrong, and admitting they need to change themselves. This requires strength only a few people possess. However treating these people with violence, threats etc. will only make them hate more.
Now more and more people begin to see, this hatred is silly thing. That's a start. But in stead of wanting to change cultural things, like removing statues, and other things, we can best keep in mind that all cultures in the world have a history in blood and other things. Best is to accept the past the way it is. And to keep people aware of that past, oh yes, but not to let it be anything to be either proud of of be offended by. Most of these iconic people, either good or bad, were dead before our parents were born. Should we continue the arguments started by people who are all dead now?
Keeping people aware, and accept this issue won't go away during our livetimes, is the only way to go. This is rooted to deep to solve in a few decades. Accepting the other group with their pros and cons, and accepting our own mistakes of the past is all we can do. That goes for the other group as much as for ours, no matter which of the groups you belong to.