It's a long-standing media tradition, and not just among the BHLM ("bleeding-heart-liberal-media") to mark Thanksgiving by paying some attention -- be it sincere or merely dutiful -- to those citizens who clearly don't have a lot to be thankful for.
In an era when dominant world views have given way to individual choice, the shoulds and oughts traditionally associated with religion hold less influence. Many wonder why we hold on to ancient beliefs at all.
Science's failure to address moral questions has made it seem like little more than an incubator for technology. It has also given faith-based religion -- that great engine of ignorance and bigotry -- a nearly uncontested claim to being the only source of moral wisdom.