Let's call a spade a spade (with the admission that I am a white middle aged woman, and so can only speak from my white middle aged female perspective)- there are an amount of people who judge others, and have bias towards them based on the colour of their skin. This is the core of the issue. It is hideous and absolutely nonsensical.
I think anyone who wants to try to address the OP's query needs to prioritise listening to the voices of non white people. Really listening. Listening to how they feel, how they are treated, what they feel may make a difference, what is helpful and unhelpful. You will get a variety of perspectives and these perspectives are what is important.
From my white perspective the following also needs to happen:
Zero tolerance of racial slurs, racism being passed off as a joke etc.. This needs to be robustly called out for what it is every single time.
Better ways to report and deal with racism within social media including what some regard as 'minor' issues.
Doing whatever we can to show that the colour of someone's skin says nothing more about them than the size of their ears, whether they are left or right handed, whether they have a full head of hair or a bald. It does not say a single thing about where they are from right now.
Better education around asylum, historical immigration, slavery, the empire etc in schools. Not just for students studying certain subjects- for every student. We as a nation have too many incorrect assumptions about how and why the ancestors of POC arrived here in the past and the difference between an asylum seeker and an illegal immigrant.
More responsible reporting and language used in the media, for example journalists should not be using terms like illegal immigrants for asylum seekers.
Facts being openly shared by governments and other officials in some sort of round-table discussion resulting in formal agreement of the correct terms, facts etc.. Giving a universally agreed consensus on matters which gives less wriggle room for people spreading misinformation. For example, what are the official rules wrt asylum seekers / illegal immigrants claiming benefits etc.. There are so many opinions which are stated as facts and so much misinformation that it can become very hard for people to see the wood for the trees, and to call out misinformation when they hear it because no one can agree the correct facts.
Awareness of how many POC are feeling now, and once this has died down. Asking anyone who may need it how you can support them. Letting them know that you care. Allowing them to vent at your white face.