A crackdown by Tunisian authorities on journalists and media figures is "methodically annihilating" what little remains of the country's hard-won freedoms, Amnesty International and Human Rights Watch said on Thursday. The rights groups said in a joint statement that authorities have "ramped up" their "repression of free speech" under Decree 54, a law against "false news", as the country readies for presidential elections set to take place this autumn.