Taking it too far?

From my experience at the ad agency I worked at, I know that Pro-Bono ads can be quite a line to cross. On the one hand, you have an extreme amount of freedom in creativity, and here in Milwaukee that often leads to award-winning work - but on the other, you're dealing with delicate subject matter and a line that can be easily crossed.

Recently BBDO created a Pro-Bono campaign highlighting childhood mental illness (check out the ads here: http://osocio.org/message/provocative_ransom_notes_on_childhood_mental_illness/) and after running just a short time, they've been pulled due to content. Critics declared that it highlighted the negative areas of childhood illness, especially with autism.

Does it drive home a negative message? Or do we need to be extreme to get our point across?