Shimon and Leivy wiped out Shchem. The Rambam et-al talk about why Shchem deserved to be wiped out. Nothing in this world happens for nothing. We know from the Torah that G-d likes to kill many birds with one stone. This is the mark of intelligence. Ancient Egypt was the erva of the world (Rashi), and the Jews lived in Goshen, which was the erva of the erva. "Do not do what they did in Ancient Egypt" (Vayikra 18, 3). What did they do? The men married men, and the women married women (Rambam). From here we learn the sin of being a lesbian, even though it's impossible for 2 women to have sex.
What did G-d do by the end? When he killed all the firstborn he also killed every single firstborn of every single person, so that if your wife slept with a boy, the mamzer firstborn of that boy was also killed. And since everybody was promiscuous there were many extra dead, and G-d showed the world what 'post-modernist progressive' is all about.
G-d also destroyed all the Egyptian Idols except one- the Baal Tzefon of the north. This was a trap to make the Egyptians run after the Jews to the sea. The Egyptians said that obviously, this god, the Baal Tzefon is stronger then the Jewish G-d. Egypt was so powerful that no slave ever escaped out of Egypt, but when the right time came Egypt was destroyed completely from top to bottom.
The same can be said about the Canaanites and the generation of the flood. When the right time comes G-d goes 'POW POW', and that's the end. The Tsunami was the same thing. G-d went 'POW POW' and 250,000 people died, just like that. We know from the Torah that "every bullet has an address", and whoever died deserved it, or his time came.
Today we threw away G-d and we worship science and technology. Little do we know that in the war of Gog and Magog G-d will wipe out 2/3 of the world (Or something like that) (They deserve it). "I will make your horses blind- blind- blind- blind". Since everything depends on waves and communication, and satellites, and GPS, and waves and waves and waves all God has to do is give a flick, and knock the earth's rotation a little out of whack, and the nations will nuke each other to death. If you look from space Israel is like a needle in the haystack, and if the communications get a little out of whack the nukes will fall on Saudi Arabia.
And we also know that the rest of the Borod (From the 10 plagues) will fall down in the war of Gog and Magog, and they will probably knock out many satellites (The gods of today's society). The Borod was huge chunks of ice with fire in the middle. Believe it or not. (See Jun 28, 2011)
P.S. By the way, I would not hang out in San Francisco during a big gay festival. Like I said, G-d loves killing many birds with one stone.
P.S. "On that day I will strike every horse with confusion, and its rider with madness. But I will open my eyes to Yehuda, while I strike every horse of the people with blindness." (Zecharya 12, 4)
"It shall be on that day that there will be a great panic of Hashem among them: each one will grab the hand of his fellow, and his hand will be raised up against the hand of his fellow." (Ibid 14,13) (See Jan 30, 2012)