Some adults (think they) are good at hiding it, but the distain will always come out in different ways.
My child is suffering from it a lot at the minute (mixed race) and it has really changed her personality and self confidence. That angers me.
I'm reading Akala on podcast, and I love it because he breaks it down so that you cannot deny there is a problem. But he backs this with historical facts, etc.
The thing is, it permeates in all areas of life. Racism isn't just something that happens on a Saturday in a park.
As an adult, it's not always easy to have that inner strength so that no matter what they say to you, it can't shake the core of who you are. But I'm getting better. I certainly didn't have it in my younger days.
However, racism in education, work, housing, dating is just so much more difficult to prove.
I know of one incident, job-wise, where I was constantly pushed back because of the colour of my skin. Sometimes you just know. But this was confirmed when I was accidently cc'd into an blatantly racist email about another colleague. I share the same name as one of the managers so I guess that was how that came about..