Perhaps, but
it is eminently clear that they are the cause of the vast majority of "organized" violence at such "gatherings." There is, of course, also a group of "opportunistic" rioters, which can be seen in current and past rioting. That would be citizens who see this as an "opportunity to obtain reparations" as some BLM leaders have asserted.
Possible, but highly unlikely. Unless you want to include responses to attacks from the Left, of the kind police are expected to "tolerate" for fear of demonstrating more "police brutality." Well common citizens "counter-protesting" or simply defending their own property, are not subject to such restrictions and can response in "self-defense."
This OP actually gives some evidence that other citizens are expressing their rights to both counter-protest and do so while preserving their rights to self-defense.
NOTE...there is no need for self-defense if one's opponent(s) don't seek to attack you. As long as one side stays peaceful, so should the other.
Also recall that many of the "LW protesters" are neither local, nor peaceful.