India has very strict gun control laws. From the International Herald Tribune:

The Oberoi Group employs many plainclothes security officers in its hotels, but these are unarmed, Oberoi said. Obtaining a license for even a single officer to carry a gun is extremely difficult in India, which has tight gun control laws.

It is likely, but not certain, that if the hotel security had been armed, they would have lost the battle anyway, due to the planning and overpowering firepower of the terrorists. That said, they might have been able to put up some sort of resistance or slowed the attack down or maybe, possibly, have saved a few of the nearly two hundred lives lost. At the very least, it might have given the terrorists pause before committing their atrocities. One thing is certain: Unarmed, security didn’t stand a chance and, by extension, neither did the guests.

I guess the point of this somewhat snarky post is that when the law abiding are completely unarmed, the lawless will always have the upper hand. If anything, they are emboldened because they know they face no resistance.