For me it's not so much hatred as it is fear and distrust. Getting into the racial categories, I think it's a lot more than just "White" "Black" "Asian" "Indigenous". There isn't really such a thing as 1 race of white people, and 1 race of black people. I don't think there's a "White" But I believe in a Caucasoid race.
And within the Caucasian race is subgroups. Western European Caucasians (Germanics, Romance people, Basques, Celtic people) Eastern European Caucasians (Slavs, Balts, Hungarians, Romanians (Linguistically Romance, genetically Eastern people). Scandinavian and Nordic people are a crossbreed between these two races. Having both R1b (West Europe) and R1a (East Europe) genepools roughly 50/50. Certain West Slavic people like the Czechs are about a quarter R1b but still mostly Eastern R1a. Then you have other groups, like the Finno-Uralic people (Not including Hungarians who are genetically Eastern), the Greeks and Albanians, and the Sami people of far Northern Europe. All those people genetically distinct from the rest. (Greeks and Albanians I believe are clustered together, don't quote me on that)
Moving out of Mainland Europe the Caucasian race continues. Georgians and Armenians are obviously Caucasians, literally they're the namesake of the entire race. Controversial opinion here but I believe Arabic people, Kurdish people, North Africans and certain Berbers, are too, Caucasian people. They have darker skin because of proximity to the equator, but their genes and skull structure is unmistakable Caucasian. Iranian people like Pashtuns/Afghans are unmistakably, undoubtedly White Caucasians and you cannot deny that. Only reason they're excluded is because of stupid religious wars.
^Pashtun people for reference. Displaying fair skin, Caucasian skull shape/facial features, light eyes. Genetic evidence backs this up. If you can look at these people and say "They're not White" Your either coping because "Muh mudslims bad" or you're just genuinely fucking retarded.
GETTING TO THE FUCKING POINT: Now all of that sounds complex as fuck. Well for "Black" people it's even more complicated. There's about 40 different races of "Black" people. Humans have spent more time inside of Africa than out of it, and Africans have the highest genetic diversity on the planet. There are tribes in Africa, that live 20 kilometers away from each other that have more genetic distance apart than a German, a Chinaman, and an Australian Aboriginal all have from each other. Khoisan people in particular are so fucking genetically distant from everyone else. Just take a look.
Nigerian Man of Central Sub-Saharan Africa.
Khoisan woman and child from far Southern Sub-Saharan Africa
Aboriginal Child from Australia/Oceania
Many people out there would look at these groups of people and see that they have dark skin and (In the case of Nigerians and Khoisans) Come from the same place (That being Africa) So they will label them as "Black". Which is such a gross oversimplification and a disservice to everything, that it makes me shocked more people don't scream about this. All three of them are genetically very distinct from each other. In the case of the Khoisan and Nigerian, it's even more of an issue. People's people will just say "African" and thus "Black" Ignoring the isolation and sheer size of Africa, and the fact that humans have been IN AFRICA for longer than they have been OUT OF IT. Thus the distance between these groups and the nullification in reality, of any "Black" label.
There is no such thing as "Black" person and "White". There are: Caucasians, Central Asians like Turkic people, About at least 35-40 different races of so called "Black people". Negritos in Adamanese Islands. (Most people would label as Black or Aboriginal, but again are distinct) Aboriginal people of Australia. Polynesians and Melanesians. Mongolic East Asian people (Japan, Korea) Dravidian people of South India (Northern Indians are cross between Dravidians and Indo-Aryan-European Caucasians) Far Northern peoples like Indigenous Siberians, Aleuts of Canada, Indigenous Greenlanders) and Indigenous North and South Americans. (Indigenous Americans and Siberians are closely related to Mongolic East Asian peoples, Indigenous Americans are probably a descended population of Indigenous Siberians. Some of which became the East Asians and the others became the Indigenous Americans.)
GETTING TO THE FUCKING POINT FOR REAL NOW: So when you say "Black" people I'm assuming the common types of Central/West Africans like the Nigerian. Who have descendants in America today from Slavery. I distrust them because 1: We did not evolve to coexist, breed, live, or associate with them. Our brains, minds, natural instincts and thought patterns are not the same. I do not believe in any such superiority or any such sense that we are "Better" than them, I merely believe we are too different from each other and unable to successfully co-exist. Resulting in racial violence coming from both sides.