As a PS – this task I do is very hard – finding something good to say about people or groups I don’t like. I also do the reverse: I criticize more harshly people or groups I _do_ like. I try very hard to reduce my own cognitive bias.
Bias is impossible to eliminate, I believe, but finding “bad in the good” and “good in the bad” seems to be the only way I can temper it a little. Drawback: People think you’re wishy-washy or don’t make sense because you’re not talking in clear “good guy/bad guy” terms.