"Reality is subjective dude"
Yeah ok
Reality isn't subjective. Reality's reality--but none of us have a monopoly on it, or any privileged (read: objective) perspective.
It remains the case that you and I and every human being can only have a perspective on reality, but that doesn't mean reality reduces to our perspectives. If we're going to call reality anything, the best we can say is that it's an impossibly complex assemblage of all perspectives (on which, logically, there is no total perspective). Ronald N. Giere calls this "scientific perspectivism," and he backs it with Ian Hacking's contingency thesis--i.e. that "knowledge is grounded in the local contingencies of its production or construction and, in principle, could have been significantly different without necessarily being significantly worse." Perspectives are conditioned by their historical context and view things in particular ways. For humans, this means viewing events with values toward which we're predisposed; and for inanimate observing apparatuses (like video recorders) it means viewing reality according to the specs to which they're built and the directions their users point them. In both cases, we're looking at reality through perspectives, which automatically limits and conditions what we perceive.
The other crucial aspect of perspectivism is that relations between perspectives are dictated by uncertainty. This doesn't mean we can't know
anything, but it does mean that some information inevitably--and logically--escapes the domain of the perspective. There are examples of this in the natural and social sciences, and at this point it's basically an accepted tenet of scientific and philosophical thought that knowledge isn't the exorcism of uncertainty, but rather that uncertainty is built into knowledge. Knowing entails non-knowing.
To the videos above, I'll say again that they offer no proof as to the beginning of the (or any) assault. There is uncertainty and, given the scope and complexity of the Charlottesville riots, I don't think the videos prove anything.
In the case of the guy who kicked the pro-lifer, however, there isn't much uncertainty at all.