B: Mixed??? Obama took every opportunity to pour gasoline on race relations and light it. He encourage rioting and violence on police in failing to explicitly call for peace. He couldn't be bothered standing up for the truth or police in the Michael Brown case, which public and local opinion was formed on complete falsehoods. The people that ultimately suffered the consequences of unjustly persecuting police putting down violent criminals has been the inner city population witnessing an explosion in crime and violence. Then add in how much the black community has fallen behind over Obama's presidency, it's fair to say he has been a complete disaster on this front.