I ask you again, what did Lettermen say that you found to be racist??? The examples you gave me are valid but Lettermen didn't homogenous Indians nor did he state that Asian women are repressed! He made a comment on a 30 year old woman living with her parents! There's nothing racist about that!!!!!
Whether you've done a dissertation on it or not isn't really relevant. For the record, I live in the west too and my entire degree (and dissertation) was mapped around colonialism, post-colonialism, and race theory. Claiming racism is solely concerned with skin colour is a very pedantic and naive definition of racism as a concept.
Racism is not limited to remarks on skin colour, it also pertains to the stereotypes that people uphold and associate with any given race. For instance all black women are hard, all Asian women are suppressed, Indian men are rapists, black men are drug dealers and generally hoodlums, all poc have a white-complex, all east-asian parents are repressive.
All of these are racist stereotypes because they homogenise entire racial groups. When you use a racial stereotype to put someone down, or talk down to or at someone it goes past ignorance and becomes racism. These stereotypes are what allow occident/orient binaries and relationships to continue existing.
23