"

 Problematic paragraph 

The following paragraph is of concern:

""The tactics of some of the more determined ALF activists are anathema to many animal rights advocates, such as Singer, who regard the animal rights movement as something that should occupy the moral high ground, an impossible claim to sustain when others are bombing buildings and risking lives in the name of the same idea.""

Should an encyclopedia make the assertion that an argument is ""an impossible claim to sustain""?   "