Let them try that type of demonstration in a ethic neighborhood & see what happens.
We already know what will happen, Black people are going to go inside and stay out the way. There will only be a few who are prepared to stand their ground against people who are literally outfitted to be shot at.
How many rallies have you seen with Black people en masse wearing helmets, flack jackets and carrying assault rifles? The only groups that come close are the New Black Panther Party, it's never random street nikkas.