Hillary Supporters alert post stalking. What you may or may not know about the Jury System.
The DU Jury is random selected from a pool of DU members. If you have a star membership, your chances for jury duty increases. If you have no post hidden your chances of jury duty increases. But with the more post hidden, the chances of jury duty decreases. If you get two hides in a short period of time, your account is locked and you have at least a 24 hour timeout until you are "reviewed"
Now, here is where the rigging of juries on DU comes into play. An OP is posted in a close forum or a group. In this case, the Hillary Clinton (Group). Most likely the vast majority who may reply to a comment in the Hillary Group is a Hillary supporter. The "alerter" stalks his prey. He doesn't immediately alert on a post with a few comments in the thread. He waits until there is over 20 posts. You know why? Because each person that posted on that thread is excluded from the jury. This increases the odds that he will get more Bernie supporters on the Jury because those 20 plus Hillary supporters are already excluded.
Things you can do move the odds of a jury verdict into your favor.
1. Have a star membership. (Your chances of being on a jury increases. Plus you get more slots to blacklist members from your jury pool)
2. Fill out your jury blacklists with Pro-Bernie supporters (look at their profile and get the ones with 100 percent chance on being on a jury)
3. Think twice about posting "negative" Bernie comments in a thread with a high number of Hillary supporters in that thread (and zero or very few Bernie Supporters). if you do, chances are your comment will be alerted on because all those Pro-Hillary posters on that thread will be excluded from the jury.
4. Don't give them a reason to alert.
= new reply since forum marked as read
Yes.
They have taken mine for far to long.
It's the right thing to do. It also drives them insane. 
...except what the original post explains--it doesn't really matter. If you do the peace, love, and hare krishna thing to keep a positive spin on any thread and a stalker waits until enough people have posted and alerts for no good reason, and in a group they do not belong to, the whole thread gets locked and everyone who posted is "in trouble" according to the rules.
The juries are stacked with Bernie people. It's a no-win situation as far as I can see. 
Hopefully things will change soon.
I actually saw that once on a jury as a reason to hide a post. Unless you say that Bernie is pure as the driven snow, a saint and a genius, you're asking for a hide these days. I'm on a lot of juries, I've never had anything of mine hidden, but some of the jury members are just awful, and almost never with an explanation. They hide stuff that shouldn't be and let stuff go that should be hidden.
