I chose to answer the question by way of comparison.
I think a "crucifix," a romish invention, is unquestionably an idol. It violates the express language of the moral law. It is either vanity, or gross wickedness; and besides defying God's Word, is an attack on Chalcedonian Christology and its creedal expression.
In comparison, a "cross" is an abstract symbol. While this symbol--and actually
any symbol--is susceptible of being turned into an idol (even an expressly authorized symbol, as in the case of the bronze serpent), symbols serve other purposes. Furthermore, very utilitarian items can be viewed symbolically. Thus, an actual
table in the midst of the congregation, or a
font, has inherent symbolic qualities.
It is possible to banish both of those things, or banish a cup or a loaf of bread from the assembly until the precise moment they are called for, and then whisk them away; but to what end? Are we frankly
afraid of what "could happen?" Are we so disparaging of the power of proper teaching and other shepherding activity (under the Word and Spirit) that, absent extraordinary efforts, the people will most certainly genuflect to any symbol at hand?
It's possible for paper, ink, and a leather binding--a Bible--to be "divinized," turned into a fetish or an amulet of sorts. I haven't seen it, but perhaps.... Likewise, for a cross, I haven't seen it, but perhaps....
Most crosses I've seen used to indicate something specific, are symbolic shorthand, a nonverbal expression for the verbal (adjective) "Christian." "This building is a Christian meetinghouse." "This person thinks of him/herself as a Christian." It isn't always
in your face either, or grandstanding. It's usually just helpful information, or a subtle bit of personal identification.
Anything at all that is
distinctively Christian can be, and no doubt has been, treated as or abhorred as an idol. I think we should limit our moral objections to those representations of the Deity, and anything common that is plainly turned into an object of veneration.
I vote "no."
