Billions of users. I would imagine it is the entire spectrum of political and cultural opinions. Pro-live/Pro-choice. Religious/Atheist. Traditional/Multicultural.
I would have used the words "anti-abortion", not pro-life, and "Monocultural", not "Traditional".
But there is bias in all of us.
"Why do you see the speck that is in your brother’s eye, but do not notice the log that is in your own eye?"
Yes, there are things more dangerous than someone who views themselves as objective while sanctimoniously berating other people for having "biased" views. I can name a great many.