There is not a single case of where a developed country has ballooned the African/black population and not seen a dramatic increase in violent crime and social disorder. In the UK, they knife people on a daily basis, they splash acid in people's faces,  they are the main source of Islamist attacks, in Sweden they riot almost every night, in France, its cities have become crime-ridden holes. It is well past time that this migration is stopped and reversed and the countries made responsible for their own improvement with their existing populations.