The Gemara in Sanhedrin 76b says that one is not allowed to return a lost item to a non-Jew. The Gemara speaks very harshly of one who does this. The Rambam (Hilchos Gezeilah 11:3) codifies this prohibition, but adds that it is praiseworthy to return the item if this will make a Kiddush Hashem.
Suppose I'm in the airport waiting for my luggage, and I notice the usual collection of bags which haven't been claimed by their owners, sitting off to the side. A very large percentage of these bags will end up being sold by airport auctions.
Does a luggage bag such as this fit the criteria for a lost item of a Non-Jew? Would one be allowed to simply take one? Bring provide sources, as well as solid logic to back your position.