As I said before: you consider that using violence is based on desperation because of "injustice", and you can see that used by anyone with any motive:

Sherbini, 32, was killed in a court in the northern German city of Dresden on Wednesday shortly before she was to give evidence in an appeal lodged by her attacker.
The 28-year-old attacker, identified only as Axel W. had been convicted and fined after calling her a "terrorist" for wearing the Islamic headscarf.
According to the Egyptian press, Sherbini was three months pregnant when she was killed. She was laid to rest in her hometown of Alexandria in northern Egypt on Monday.

via AFP: Egypt cleric seeks stiff penalty as 'veil martyr' buried.

Just read Esther's post on the subject. I think the most important think of it is this paragraph:

So far this year, one hijab-wearing Muslim girl was killed in Germany for not being Muslim enough.  Another 20-year old was killed for not being a virgin.  This follows up on dozens of cases in the past few years were Muslim women were killed by their Muslim family for not being Muslim enough.  As far as I know Sherbini's case is the first one in Germany (possibly in  Europe), where a woman is killed for being Muslim.

A lot of outrage when one woman is killed supposedly because she was a Muslim. None if they are killed daily because of "Islamic culture". Fair?