That happens often on FR since there is no Central Committee here that determines how many times an article can or cannot be posted.
The Mods simply ask that a search be done before posting and headlines not be changed to facilitate that search to avoid double or multiple postings.
This site is not simply a political site as you seem to think it is. It is a news site that is more or less run by us as we try to disseminate unfiltered news and information amongst our community here.
That's the logistical answer to your question.
As to why people here are interested in this story is because;
1. It was such a violent and hateful act by the perpetrator that the senselessness of it leaves many of the more compassionate souls here looking for information and hopefully, answers.
2. There are still a great many questions to be answered about this crime that people get interested and follow the news to get answers.
3. And despite your statements to the contrary, there is a political angle to this story. This woman had a small role in the recent film "W". She played what was believed to be a sort of Ann Coulter personality. Given the stories we hear daily about violence and other crap perpetrated by those with Bush Derangement Syndrome and others on the Left, one can easily wonder if the animal who murdered this woman had an axe to grind.
I hope this answers some of your wonderings.
Now shut the fuck up.