I'm embarrassed to admit I have a dark part of me that feels hatred. Most of us are taught, it's a sin to hate another person and usually fear of sinning smothers the fires of hate or maybe it just pushes it into denial. How is hate different than extreme dislike?

I recently had a verbal disagreement with two acquaintances(a husband and wife) IRL and now I absolutely hate these people. Is it wrong to have these feelings since they're not friends or family? If it's wrong, how do I deal/cope with this feeling?