A dictionary only outlines common usage (it does not provide context), and I indicated the common usage in my comment as well. If you ever want to make a nuanced argument, you must clearly define (and sometimes re-define) the words you are using! Otherwise, someone with a dictionary or a thesaurus can quickly distort your intentions by distorting the original meaning outside of its original context.
Take a look at my other response below -- it may clear things up a little, but my point still stands: Adria was not using "racism" the same way you are defining "racism," and just because she did a poor job of explaining her position on Twitter does not automatically invalidate her opinions (it just means her opinions were not adequately explained).
http://en.wikipedia.org/wiki/Racism#Definitions
Or do you accept this definition as superior to one in a Physics textbook? http://dictionary.reference.com/browse/gravity?s=t
Redefining established words is not acceptable.
Anyway, this discussion is a red herring.
Adria just wants an excuse to be racist, and you're defending her.
I don't follow. How did the co-worker discriminate against the Asian guy?
Now if he did, and said something like - your race is fucking weak, you don’t belong here with us - than yes, that would be racism.
But simply thinking that Asians don't handle alcohol as well as Europeans do, is not racism.
... what? Asians are the same species as every other race. The idea that Asians somehow did not evolve this particular thing has nothing to do with the genetic change over time that causes speciation/evolution. I think you grossly misunderstand evolution and that your remarks are ignorant (and I think many people would claim racist).
Unfortunately your objections make no sense. It's well established that some human subgroups have different physical adaptations (eg. lactase production) that have been naturally selected in the presence of local food sources or production methods. How is that unrelated to evolution?
Example: When exposed to the sun, white people have a higher risk to get a skin cancer than black people (especially if they live in Australia). On the other hand, black people having a skin that filter more UV and make them more vulnerable to a Vitamin D deficiency (especially if they live in NYC).
This is simply because they evolved to adapt to different climates. Just claiming "no, there is no difference because we're all the same species" is plain wrong.
I think you're the one proving ignorant here.
racism - dictionary
1.The belief that all members of each race possess characteristics or abilities specific to that race, esp. so as to distinguish it as inferior or superior to another race or races.
2.Prejudice or discrimination directed against someone of a different race based on such a belief.
This is the original definition of the word - 1 year ago, 10 years ago, 100 years ago, 500 years ago.
The redefinition of racism is merely a fabrication meant to suit someone elses particular agenda, or to get you to submit to their particular argument or point-of-view.