Indeed, much like you have positive and negative discrimination.
Many people like to say that 'discrimination is bad', however this ignores the fact that we *must* discriminate in order to survive. I discriminate between what I eat as being poisonous or not, etc. Many of humanities best decisions have been made as a result of <shock!> discrimination.
Similarily, many people regard sexism as a 'crime against women (and to be fair, less frequently men)', i.e. 'women are only worth the sex they can give'. Still others regard sexism as simply the assertion that biological sexism or division exists, i.e. 'men are inately stronger' is a sexist generalization! Yet still others think sexism is the, 'natural division of gender roles', i.e. sexism is a positive. God...it's a bit much to keep track of!