Try this simple experiment. (I use the word simple, while not neglecting your intelligence just realizing that the details may have escaped you.)
Replace the derogatory ethnic labels with "human", and it may help you to map out the details.
Whilst there are evil and not so evil people (and you could argue this) they are all as well "humans".
And I'm pretty sure it makes you feel stronger by using such a strong retort, in the reality of the topic at hand, it shows the weakness of your intellect and your ignorance (unknowing) of many subjects.
Judge not lest ye be judged, friend.