Why is Obama neglecting to do the right thing and become the first mixed president in U.S history to unite?

The president who so far has remained silent about the crime. Barack Obama was vociferously outspoken when his black buddy Louis Gates was properly and justifiably arrested by white officers in Boston two years ago. However, when a white woman is brutally beaten to a pulp by two black women less than an hour from the White House, our POTUS has nothing to say on the subject.Why is Obama biased?I am a black man so call me racist if you want, black children.