The difference is if you were seated next to a white bum you would not leap to the conclusion that every single white person was an alcohol reeking pant crapper, and post that observation on Facebook.

I have flown many AK flights with drunk, loud and obnoxious charter fisherman, yet I don't think they are representative of the entire white race or even charter fishermen in general. Racists make assumptions about entire groups of people based on preset ideas or experiences that justify their attitudes.