If I hear one more wacko use this catchphrase I'm going to hurl.
People having the freedom to speak their minds, whether in agreement with or disagreement with the government, does not provide aid and comfort to the enemy. Telling people that if they don't agree with the government, they should keep their mouths shut? That provides aid and comfort to the enemy, because that's what they do.
But seriously, if you must cling to that flawed belief, at least try to come up with a new catchphrase.