My view is that many mistake Scientifically Correct from Politically Correct. It is Scientifically Correct to say that there is very little difference, genetically, between Europeans, Asians, Africans, Latin Americans, etc. It also happens to be Politically Correct. However, it is also Scientifically Correct to say that there are huge disparities in victim reported violent crime rates between Europeans, Asians, Africans, and Latin Americans. However, this is not Politically Correct. This is an example of where a problem is identified, but unable to be discussed in the public sphere. If a problem can't be discussed, it can't be solved.
An African-American male is over 7 times more likely to murder a person than a Hispanic or European-American male. He is also over 6 times more likely to be the victim of a murder. This is elementary statistics based on data collected by the FBI. If this problem (which in my opinion is cultural rather than this phony construct called "racial") can't be discussed in an honest fashion due to political organizations which will threaten politicians with boycotts/villification/etc due to their refusal to acknowledge inconvenient truths, then the problem will simply continue. Not talking about it makes the problem become uglier, because non-Black Americans in general have internalized the fact that poor Black neighborhoods are vastly more violent and dangerous. Any realtor can tell you this. They deal with people's ACTUAL prejudices every day, rather than the Politically Correct, aspirational notions of the desire to live in a diverse neighborhood.
I say this as a white guy who grew up in various poor parts of the south, and spent large parts of my childhood with mostly black friends in mostly black neighborhoods. Political Correctness prevents us from collectively helping the predominantly black victims of a large sub-culture of black America that celebrates crime, dehumanizes women and gays, views educational/career achievement as betrayal of black identity, and tolerate men who willingly abandon their families.
America will not succeed as a nation unless black Americans succeed, and political correctness throws them to the wolves by pretending a problem they are victimized by doesn't exist.