In Spain, public officials are barred from wearing turbans or crosses to promote their personal religion.

Is this just, or sinful?

For Many years Catholic Priests were forbidden to wear their robes in public in Australia. However since Buddhist monks and Greek Orthodox priests arrived this ban has been ignored. It was just a protestant reaction to Catholic priests. It is not just but Priests and ministers go over this by wearing the clerical collar

I think it's a bit much. A government employee's acknowledgment of their personal faith does not necessarily translate into a government endorsement or favor to that religion.

I agree, and evidence of this is JFK's Catholicism, which did not dictate his policies.The United States did not become a Catholic country via his presidency.

How about an image like this:



Acceptable or no?

The image itself is acceptable, she's wrapped in the flag and a Christian. I see nothing wrong with it as an image, but if it's a projection of how she'd lead the country it's a different story.

The underlying issue is that of many separate systems of law, only one of which is democratic.

In most cases religious and secular law agree, but in a tiny minority of cases they don't.

Religious law is held to be 'higher' than secular law by various churches and their priests.

A public official is expected to be the public face of secular law (their employers are ultimately the secular lawmakers after all)

If a public official wears religious garb at work, then there is a visible conflict of interest when dealing with issues where secular and religious law might disagree.

This is the chain of logic that leads to such bans.

Minesadorada, The problem is that secular governments do employ people to perform religious duties. For example as Chaplains in the army, jails and hospitals. Clergy who perform this function might wear a uniform or civil clothes when performing other duties. But when performing the duties of chaplain they are more effective if they wear the cloths associated with that role. Franciscan priests in my area have found themselves more acceptable if they wear their robes, (brown habit)( in hospitals.