In the case of the photographer, the customer isn't being shamed, shunned, and stigmatized. The government definitely has a role here and should intervene in such cases in order to ensure that businesses treat customers equally and respectably.
Just think about the way modern media companies constantly shame and stigmatize people. How are you going to even define when someone is "shamed" or "stigmatized"? Aren't there people who should be shamed and stigmatized?
This seems completely unworkable and guaranteed to make absolutely no one happy other than the lawyers making money off of all the frivolous legal disputes.
Yeah, you have a good point. My opinions are pretty recently formed on this area so I'm probably off-base, and it was interesting hearing your perspective. Fortunately I'm not a judge! :-)