Motherhood has everything to do with this discussion. Why do you think the parents complained about the bus driver?
Would you have wanted someone discussing embryonic stem cell research with your 7 or 8 year old child?
I would not have. I cherished the years when my children were young and innocent enough not to know that some adults were evil enough to want to murder their own babies, which is where a discussion of embryonic stem cell research would eventually lead.
"Why do you think the parents complained about the bus driver?"
I do not know and neither do you. Kindly refrain from making assumtions without knowing all the facts.
Since all the facts are not known, the bus driver should not have been fired. Simple enough no? (probably not)