There is no such thing as "reverse racism" -- it's just racism. And yes, white people can be the target for racism. Anyone can. While I don't have a side in this issue (an I'm indigenous myself), Ms. Khan seems unprofessional and mistaken in her belief about what racism is: discrimination based on race. You don't need to have money and power to be a racist and discriminate against someone else.
Also, poor white people exist, in case case people don't know that. I grew up surrounded with white people just as poor as me. And they were treated like crap too. Let's stop the hate and the us vs them crap already, people.