I think the time, where you could use Newsweek covers as a sentiment indicator, has passed. After 77 years the magazine is struggling for existence and it is not impossible that it moves to the realm of history in a few months.
Actually, you can buy it for a few dollars. This would allow you to create your own sentiment indicator, albeit a quite expensive one.
Currently Newsweek shows more interest in hunting wolves than bears, as the cover in the article below confirms. Maybe we can use this thread to promote the Alaskan wolves and defend them against female, human predators?