Cheek turning should be viewed in the context of ministering the gospel (which a Christian ought to do with his or her whole life, as God desires). It’s being willing to put up with SOME guff for the sake of gospel ministry. If it goes too far, then pearls-and-swine applies and you can get out of there. Standing up for neighbor against danger is a Good Thing too (that’s why Jesus said take a sword), but the neighbor must not be idolized, and neither must the country. Wisdom dictates when to do what, and it comes from the Holy Spirit. No mechanical applied system of man can bear that responsibility of direction.
As I said, I don’t disagree with you in principle, but, the question is, “How much guff should I put up with?”
Now, we are down to the brass tacks.
PS, at my age, I cannot put up with too much physical guff!