Most people are closet Humanists

I would like to explore the idea that most people are 'Humanists', or at least accept the principles, even if they don't realise it.
What I mean by this is that most people would accept the Humanist moral rule (The Golden Rule, and thinking in terms of the outcomes of actions) as 'trumping' other rules.
As an example, people that follow religious practices and views that affect other people will usually try to justify them with humanist principles ... or even modify their views to conform to humanist principles.  Likewise many people frown on prejudice such homophobia and racism as unacceptable on humanist principles, and will generally accept that view as the higher principle, even if they fail to accept it at a lower emotional level.  This is why so many racist remarks start off: "I'm not racist, but ..."
I will look out for examples from life and post them here to see how this concept stands up.