Some words are heavily dependent upon context to determine if they are negative or positive.

For example the word discriminating is actually a very positive word in most contexts and negative in only a very few contexts.

The word means having or showing refined taste or good judgment. 

What could possibly be wrong with that?

It means that a discriminating person discriminates regarding what they value.

What could be said about a person who did not so discriminate?

Of course, we consider it negative behavior to discriminate with regard to race, sex, age, weight, sexual orientation or disabilities.

Yet even here, more context is needed.

If I determine not to marry a person of another race, I am discriminating. Is that somehow wrong?

If I refuse to hire a morbidly obese person as a security guard for my firm, is that wrong?

If I choose not to enroll my young son in a summer camp program because the leader is a homosexual, is that wrong.

Many acts of discrimination against others on the basis of such things are not wrong; they are simply stupid, and based in ignorance. This difference is important.