You may be right about DU.
I have a funny DU story from earlier this week.
Remember when there was one day when ABC finally had Trump up by one point after having him trailing earlier?
Somebody posted the ABC poll to DU. The Dummies went nuts and called them a Trump propagandist, traitor, etc. etc.
The next day ABC had the witch back in the lead by a couple of points.
I think it may have been the same poster who posted it and said: “Now that Hillary is leading, is it OK for me to post this?”
The DUers exploded again and said “That sounds like sarcasm. You must be a Trump troll.”
That poster is a good candidate for the hacker!