”巴尔的摩的治安出了名的差，“ You should have stopped after this sentence. The issue has been addressed by your words so far.
"因为有很多X人(某种深色皮肤)。" This part was not necessary. It did not add any value to the previous part.
Why did you feel the need for the latter? You, subconsciously, wanted the latter to explain the former; it was not you who made the determination, the latter did.
Your children knew that skin color had nothing to do with it.
Sometimes, explanation can only weaken your argument because it tells the listener that you do not want to firmly stand behind what you said and need things to buttress it. Some explanation can even negate your point, just like what happed here.
Schools nowadays are educating less and indoctrinating more. But that's a separate matter.
选择“Disable on www.wenxuecity.com”
选择“don't run on pages on this domain”
