From looking at research paper that studied the genes of people from geographic locations shows that race isn’t a thing on a genetic level. You, others and I are Homo Sapiens with the only difference is phenotypes, genes that change only appearance.
With that said, people are also pretty diverse, who are you talking to? How did you come off? What was their view point?
From my stance this is another article by another white person with “white guilt” talking for black people. Also from having a Asian step mom and her side of the family experience racism after 9/11 and being physically attacked. I married a Chilean girl. I don’t have any perception of division.
With that said, talks of racism could be difficult in may reasons, being one it could come off preachy as we had made great progress from a time of extreme racisms. Could be people so uncomfortable with it and fear to engage. Maybe they just want to get on with their lives and focus what they have control over in their own. Maybe they see issues around racism that isn’t being discussed and refused to be discussed over.