Is there anything wrong with interacial relationships? No, unless there is something else wrong with a relationship, which might include some racist motivations. Such as, racist thinking driving someone to get a sexual relationship with someone of a particular race, objectifying the other person and messing with them and creating an awful relationship, if/when that happens (i.e. in no way do I mean to say that is usually the case). Why are people against it? Racist thinking, usually. Often it is insecure racist thinking of people fearing their children/spouses/partners/potential-partners/community/etc will mix and/or be “lost” to them or “contaminated” or “brought down” in one way or another. Afraid of the loss of their community as they know and think about it.