I can identify with the frustration shown in this video. I can appreciate the sense of wanting to control a space as a group identified as people of African ancestry when one's whole life has felt like it has existed in a space controlled by people of European ancestry. But the seeds of racism are clearly present within that small and temporary, but racially defined, space.
When "us" and "them" become fixed into a determinative group identity, then conflict and fighting between the groups is inevitable. "Black" and "white" are just variations on the theme of "us" and "them," but it is more pernicious than many forms of "us" and "them" because the categories are perceived as "natural" and "biological" with a real biological basis for the negative projections about the "them."
Obviously there is a lot more I could say about this issue that involves the arguments regarding the institutional racism with its built-in "white privilege" that we are confronted with every day, especially when seeing the institutional racism at work in and through the entire system of law enforcement in this nation.
Also there is much to be said about how to actually address institutional racism and stop it. How are we going to overcome our own mental slavery to the very idea of race? How are we going to liberate ourselves from our own erroneous conceptualizations about humanity and our place within the human family?
But I will leave it here for now on the point that for those of us who oppose institutional racism, we need to see each other's views on the notion of race itself and learn to talk with each other about those differences if we are going to work together and be successful at ending institutional racism.