Re: So Apparently I'm a Racist
I agree with the others here who have said the word "racist" no longer means what it used to mean.
What happens in cases like these is not racism, but more the brain picking up on visual clues, searching the memory banks, and coming up with the closest approximation to what we were looking for.
If you're say, a member of a secluded Amazon rain forest tribe, and you've seen exactly 3 white people in your life, then that's all you have to go on. At that point, all white people look the same to you, more or less. If two of them are similar builds, same hair color, same approximate age, etc. and both have mustaches, then you'll likely mix them up.
What I find interesting in my part of the world is people not being able to differentiate between Chinese, Japanese, Korean or Vietnamese. They're often referred to as "Chinese" or simply "Asian". I don't quite understand why people don't see the differences, myself, because I can - but at the same time, I 'get it', because the facial features of the people of those countries are more similar to each other than they are to my caucasian/European features. The same works in reverse, of course.
Is it "racist" to say person A looks like person B because the obvious similarity is skin color or over all ethnicity? Well, no. At worst, it's ignorant, IMO, but innocently so. Otherwise, chalk it up to the memory banks simply not having much to draw on. ie. Get out of your bubble a bit more!