Right now a parent is less a child and there can only be her or her boyfriend who did it You seem to have conveniently omitted the fact that the other man, the African Rudy Guede, was convicted and is serving 16 years because he cut a deal.
There are a class of European liberals who imagine that when a white person can be accused of murder that it was simply too complicated for a black person to have carried out.
It's a form of racism ~ very European.