Reporters Without Borders has charged him with muzzling the press and ordering attacks on journalists. Norms of civility can be oppressive, a potent means of muzzling legitimate demands of accountability. The reason that muzzling was introduced was not because greyhounds are aggressive. Thurmond held resentment toward NBC for its lack of coverage of his military muzzling claims. There are several cases of the corps being accused of muzzling expert investigators. In 1948 MI5 considered strategies for "muzzling the tiresome Miss Sylvia Pankhurst".