Crusading in the News

I would just like to comment on how common the term "crusading" has become these days. Just by searching the term in Google News, I ran into several articles describing some more 'modern' crusades: Obama's health care crusade, a crusade to provide food and shelter for the homeless of New York City, a crusade against junk food (seriously?). In my opinion, I think that the term "crusading" should be reserved for describing past crusades of the Middle Ages, where the term was originally coined, or even to describe modern religious warfare. But when I read an article telling me a chef is launching a CRUSADE to promote healthier eating, I can't help but feel a little frustrated at how common and poorly-used this word/concept has become.