I generally try to avoid racist people, because they'll treat me and many of my friends poorly. That's what "racism" meant in the culture I was brought up in - a racist person was by definition one who treated certain races poorly.
Because of that, it's very hard for me to have normal interactions with people who explicitly identify as racist, even if they say they're a special kind of racist who intends to treat me well.
So it's a matter of definition, not behavior. Because the point of unconscious bias training is to help people see the ways in which they are racist even if they don't think of themselves as racist.
In other words, there's no magically non-racist person out there. Everyone's a little bit racist.