Blog i found about how male/female killers are treated differently

http://jsoltys.wordpress.com/2008/10/14/violence-in-the-home-vs-gender-diagnosed-or-demonized/

I found this blog, which the writer talks about how men who have killed their children and wives are treated differently to females who kill their husbands and children. I found it really interesting because he uses two cases as an example to prove his point that Males are demonized more for this crime than women. im not sure i agree although he makes a strong point, this is only two cases, i believe yes in this case he is right the woman got more sympathy and had excuses made for her, but i think when women kill it is alot more shocking, especially when children are involved... is this because women are suposed to have the maternal instinct?