Racist vigilants roaming the streets roaming the streets really? I would have to agree with you if we happened to be in Alabama or Mississippi sixty years ago. If you remember Medgar Evers was assinated by a white supremacist and found innocent by an all white jury. In the 1960’s the Feds made sure blacks got the vote. With more blacks registered all white juries were integrated.
These days if you had a group of white guys hunting down blacks that would be stopped as soon as it started. And the perpetrators put in federal prison for hate crimes. This is not to say deranged individuals of either race attack the opposite race. It happens.