The HN moderators have repeatedly said that they have not seen evidence of coordinated downvoting, e.g.: https://news.ycombinator.com/item?id=46378818

Test it out then. Say something critical about Israel. See the downvote my original reply has.

	▲	Imustaskforhelp 2 days ago \| parent [-]
		I sort of agree in the sense that this particular thing has been FLAGGED on 3 different occasions... and your original comment has been flagged as well, so I am not even sure what it might've said in the first place.