Leftist diversity advocates and multiculturalists are right to argue that people of all races, religions and cultures should be equal in the eyes of the law. But their argument borders on idiocy when they argue that one set of cultural values cannot be judged superior to another and that to do so is Eurocentrism.
That's unbridled nonsense...
As with anything, how one defines X will determine its validity. Problems begin when two people choose to define X differently.
It is not simply improper to argue the general to the specific - it is an abject failure of critical thinking, an underlying flaw that corrupts all subsequent decisions based upon the flawed premise. Example: To apply the general stereotype that Black people are uneducated, low-intellect, good at sports, prone to riot, vote Democrat, drug-slinging parasites and pre-disposed to accepting welfare based upon their skin color and observed group behaviors, and then applying that general argument to the specific case of Walter Williams will leave the accuser in an unwinnable intellectual pickle.
There is nothing wrong with 'multiculturalism' - so long as one does not drift into the weeds in what multiculturalism means. It 'properly' means extending the same Rights and responsibilities and tolerance to every individual from any culture as you would extend to anyone else. It means equality in the eyes of the law. It does not mean moral equality.
The next time you find yourself about to spit disgust at X or Y, take pause and consider if you are extending the same tolerance you expect as an American.
No man or woman may infringe or violate your Natural Rights or our collective rules that are in place to provide existential protection to our republic (such as Treason). Any person who treads on such ground should be treated equally - and stomped into a grease spot.
But not allowing a Walter Williams the same freedoms in our society as you expect - that's just a demonstration of The Stupid.
'So K - apply your argument to Muslims - gotcha!'
No. Any man or woman who dutifully follows the teachings of the Koran takes the conscious decision to religiously seek the demise or subjugation of all non-Muslims. Such people choose to be incompatible with our culture, values and the very existence of our republic as idealized in the DoI, USC and BoR.
Existential threats of every flavor - Muslim, Communist or White Trash, Free Shit Army parasites, State-paid infringers and violators of Natural and Constitutional Laws, and filthy thieves who steal from the public purse - are not to be tolerated, but extirpated.