overnight shelling by the Israeli army in Gaza kills 18 civilians

BBC

Had this attack anything to do with the American election? - in the sense that such an outrageous act would stay in the Shadow of the US election?

How much of a “shadow” is it outside of the US ?

Outrageous? I don’t think so. When you launch rockets, and other assorted ordnance, at your neighbor on a daily basis, you shouldn’t be surprised when they send something back. If anything, the Israelis have exhibited considerable restraint.