Is it really ok to kill a black man

Not only is it the hardest thing to be in America, not only is it hard for us to even get respected by our women, but now it is apparently legal to kill unarmed black people when they walk down the street. How is it the news will stress who will be the republican to run against obama for the presidency, while in our own back yard the laws that will be strictly enforced when broken by a black man,but do not apply when it comes to a white man, do we live in 2012 or 1812 and people wonder why some unprivileged youth feel there is no hope for them and revert to crime. Are we judged as guilty until proven innocent?