Something shocking, like "playing hooky", that could get people in trouble. In this case, people will get in trouble, because someone will find out they were playing hooky and report them. However, because people are directly being effected, a shit-storm will be caused, and people will accept that this is a problem faster.
On the other hand, the examples could have been something trivial, such as "Weight". It may get people annoyed about it, but no one is going to lose their job. And since they won't lose their job, they won't be pissed, and Facebook can drag their feet.
The best part is, anyone with malicious intent could make these searches on their own. Exposing it to the public just forces someone to take action.