The arrests by the Tunisian government of political opponents and critics are fundamentally at odds with the principles Tunisians adopted in a constitution that explicitly guarantees freedom of opinion, thought, and expression. The arrest on Monday of former Speaker of Parliament Rached Ghannouchi, the closure of the Nahda party headquarters, and the banning of meetings held by certain opposition groups – and the Tunisian government’s implication that these actions are based on public statements – represent a troubling escalation by the Tunisian government against perceived opponents. The Tunisian government’s obligation to respect freedom of expression and other human rights is larger than any individual or political party, and is essential to a vibrant democracy and to the U.S.-Tunisia relationship.