An avowed racialist could groom a child into an ideology, which is something you should watch out for in an adoption process; but that is a very different thing from raising a kid.
Raising a kid isn't indoctrinating them into your value system. Raising a kid involves protecting them and giving them a safe space to grown naturally. They will adopt and keep your values if it makes sense to them as adults.
An avowed racialist could groom a child into an ideology, which is something you should watch out for in an adoption process; but that is a very different thing from raising a kid.
Raising a kid isn't indoctrinating them into your value system. Raising a kid involves protecting them and giving them a safe space to grown naturally. They will adopt and keep your values if it makes sense to them as adults.