Essential liberties (e.g., USA Bill of Rights, etc.) have to appreciated dogmatically for them to remain intact. As soon as people enter into arguments about the utility and practicality of essential liberties, they begin to appear to validate the concerns of an oppressor.
In other words, if you believe in your freedom, you should fight for it, not try to convince others of the pragmatic values of having it.
I fully and totally agree, upvoted you and wish I could upvote you even more (hopefully, others will!), especially considering the parent post you replied to.
Ideas (and videos, and guns) don't kill people. People kill people.
It has always been, and will likely persist for a very long time.
Utilitarianism be damned - not a single millimetre of freedom should be sacrificed in a vain attempt to limit that human tendency.
In other words, if you believe in your freedom, you should fight for it, not try to convince others of the pragmatic values of having it.