I think it would be weird if the noose or the gun were a fashion statement, rather than an identifier or a status symbol. Millions of Americans were guns every day as a badge of office (not around their neck, of course). Millions more wear slipknots around their neck as a status symbol and statement of fashion that says "business professional".
Both of these choices are done in order to identify the wearer with a larger ideal - that of law enforcement or professional conduct. I see no difference when a Christian wears a cross in order to visibly and immediately identified by strangers or fellows as a member of that fraternity. Recall that the early church wore or displayed the ichthus as an identifier of their belief in the "Way", as a member of the church.
The centrality of the cross in the Christian life is unique, and uniquely important. The cross is the chosen tool of Christ's physical suffering, the emblem of his work, and a graphic reminder of what it will mean to continue in the Christian life. We will experience hardship and persecution. We will drink of the cup of Christ's suffering. While the emblem of the cross is meaningless without the following teaching of the open tomb, it is the cross that was chosen by the Apostles to be the focal point of their preaching on the redemptive work of Christ. The empty tomb is not important as a symbol of "victory over death", the empty tomb is important because it confirms that the work of Christ on the cross, that of substitutionary atonement, was accepted by God as valid and complete. In consequence, we return to the cross as the ultimate symbol of that redemption and the place of true justification.
"The rational mind is dangerous; the Christian mind is devastating."
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