Must we?

How about changing the context so there is no "other", just one of our brothers or sisters, someone who - like us - has strengths and weaknesses.

Let's tell stories and ideas about bathtub people and their successful conversion to -people.

I have seen whiners given responsibility for something not too important suddenly find they like being recognized for contributing to group success.

I have seen apparent dead weight come to life when asked what they wanted to do and then given a chance to do, or work toward doing.

I have seen very negative folks co-opted by putting them in charge of reviewing something for its pros and cons.

What other strategies have worked?