The 30-40 year old woman who gets drunk in a small-town bar and starts twerking to get the attention of the 5-7 guys in the bar. It's ridiculous and saaad.
When something awful happens, people tend to pay attention to the awful thing, especially the victims. This is unacceptable to the Attention Shrieker who must be the center of attention at all times. Thus, whenever something happens which might draw attention away from them, they will start shrieking. Not only is attention expected, but reassurance and coddling to remind them that though someone just had both of their legs ripped off by an alligator, THEY are the real victim.
When the man jumped off the building, the attention shriekers immediately began shrieking so people would look at them instead of the dying man.
Someone does or says something you don't like so you walk away, figuratively or literally, from them in a way that evokes feelings of guilt, shame, etc., to get them to admit fault, apologize, or feel bad in some way.
A: "Aww i feel bad, we made her leave when we spoke our minds."
B: "Don't feel bad, that was definitely an attention walk."