That's a lot of dishonesty and delusion to dig through, but I will do my best here.

"You are moving goalposts, and no, if one guy downvotes you, it doesn't really mean he's mobilized his friends to do his bidding."
He literally made a post about me flagging him, prompting people to flag my content.

"Do you know the statistics on this? They don't support BLM's claims, just saying."
Do you even live in this country? Do you have black friends or family in America? Have you ever talked to any of them about their encounters with police? There is no denying that there is institutionalized racism in America, especially in our police forces. I could post a thousand articles and videos of police misconduct by white supremacist officers, but you wouldn't read/watch them anyway. You avoid and dismiss all evidence that you know would shatter your claims. There's a lot of that going around these days.

"They" are not running anything, you are deluded. Every facet of the media and government politics right now is polluted with identitarian ideology and left-wing bias and you claim it's the alt-right running the show. You are very much deluded. Trump may be the elected president of the US, but almost every other western country has adopted a far-left marxist identitarian ideology of their politics de-jour."
If you believe that the party currently controlling the courts, congress, presidency, and govornorships doesn't have any real power, you are the one that's deluded. The media appears to have a liberal bias because it is their job to report the truth, and the truth has a liberal bias. Countries around the world are adopting socialist policies because that is how you remain a competitive nation in the global marketplace. It has nothing to do with Marxism or identity politics. If you were a liberal, you would know that.

"I figured it'd be a lesson for you, but you obviously didn't learn. Take it as a slap on the wrist"
This is you on a power trip, right here. This is you being a total fucking fascist. You even appropriate fascist language using terms like "teach you a lesson" and "slap on the wrist." You think you are any different than every other piece of shit that has got a kick out of using power to hurt people you hate. History is full of petty tyrants, and they all act the same. You really showed your ass with this comment. Your heart is a fucking sewage pump.

Here's the thing. I do not advocate violence. Some folks in the movement put passion before logic and precision. They attack without thinking, and they discredit the good work that is being done by the majority of those involved. Many of them are agent provocateurs. Most of them are just angry kids. None of them have any real money or power. They feel helpless, and they lash out.
MLK said it best, and I will quote him here.
"I contend that the cry of "black power" is, at bottom, a reaction to the reluctance of white power to make the kind of changes necessary to make justice a reality for the Negro. I think that we've got to see that a riot is the language of the unheard."
It is also important to understand the logic of resorting to violence in the face of actual Nazis, who openly advocate and practice violence themselves. The entire world went to war with Nazis and Confederates because their ideology is that white people are superior, and it is their place to rule over all other races. Those wars happened, not because the people involved wanted war, but because they understood that genocide should not be tolerated.
It's a crazy debate to have, because it ultimately comes down to the paradox of tolerance. The paradox of tolerance, first described by Karl Popper in 1945, is a decision theory paradox. The paradox states that if a society is tolerant without limit, their ability to be tolerant will eventually be seized or destroyed by the intolerant. Popper came to the seemingly paradoxical conclusion that in order to maintain a tolerant society, the society must be intolerant of intolerance.

There's a wide and diverse range of tactics being practiced by all parties involved, so we can both post videos of bad actors all day. You have already demonstrated that you are willing to speak from a position of ignorance, and respond without even watching the video first, so not much point in that. Ultimately, it comes down to whose side you are on. Right now you are on the side of a shitposter and some white supremacists.
What the fuck is wrong with you people?