Is there a difference between being racist and hating people who treated you badly because they think them selves superior

If it's only those specific people, then it's not the same

If you hate their race because of it, you became racist because of the racism of others

Either way hate is not worth it, the only right way is to be full of love

As long as it’s an individual gripe, not generalised towards everyone who shares the same ethnicity.

First one would be stupidity and arrogance, the second might be just arrogance.