Joseph Stalin is giving a speech one day...?

Then, someone sneezes. Stalin looks up and says, "who sneezed"? No one answers. Stalin asks again, a little louder, "Who sneezed"? Then, he says "okay, fine", and has the entire first row of his audience escorted outside and shot. Then, he asks politely, "now, then, who sneezed"? Still, no one answers. Enraged, Stalin has the second row taken out and shot, and asks, "who sneezed"? Then, a small, bespectacled man slowly stands up shaking, and in a trembling voice, says, "I sneezed, comrade Stalin". Stalin looks up and says "bless you, comrade".