Why do innocent people have to die?

I have a cousin and her boyfriend just got killed on Saturday. We do not know the reason why he got killed but he just did. He was hanging out with two white boys and he dropped my brother and my cousin off at work. He said he was coming back home but he never did. They found him yesterday in Alabama in the back of his SUV. The two white boys were driving his car and they had him dead in the back seat. When the police tried to stop them they led them on a high speed chase. They wrecked the SUV and thats when the police found the dead body in the back. My cousin boyfriend was hit repeadtly in the back of the head with a hammer. When will this ongoing violence ever in. Why do so many innocent black men die because of discrimination?