It can survive in any environment because we have our own democracy.
An opinion for someone or something
Limitations on free speech during times of conflict raises different types of constitutional issues. The Supreme Court has ruled in Schrenk v. United States (1919) that in times of war free expression can be curtailed. This has largely been true in every military conflict from the Revolutionary War to the present. The government has broad powers to restrict hate speech, prohibit the publication of certain material, forbid aid to enemy combatants, and imprison anyone suspected of undermining government efforts to pursue the war. Protest against war are allowed under the First Amendment provisions.
The answered to your question is rudder. The rudder is a fin-like object on the back of a ship. It allows the ship to not rely completely on the sails to change direction.