So I have watched the video, and can't really tell what happen. If the guy in the gray coat did secure the weapon, it doesnt match the audio.
Lets clear this up, the US does not have a constitional right to carry concealed. The deceased had a conceal carry permit, but did not have it or any ID with him. Assuming those are the facts, he was carrying illegally.
Secondly, we need to clear up the right the protest, US citizens do have the right to peacefully protest, they can not interfere with law enforcement, that is not peacefully protesting. Scream and shout but the moment you step up and engage with law enforcement you are no longer protesting.
What I cant tell is why the deceased wouldn't let go of the lady after she was pushed by law enforcement, not sure what was going on there but the story he was trying to help her up doesnt seem likely.
He then resisted law enforcement, and had multiple agents trying to subdue him. During that scrum, he hear an officer say gun, at which point everyone breaks and shots are fired. When the officer is heard yelling gun, I can see movement in the back waistband but cant tell whose hand it is. It was this movement where the one officer pulls his gun, and then within a second shots are fired.
His parents have put out a statement saying he wanted to get involved in the protests and they said don't do anything stupid, trying to portray him as caring and level headed (which he very well could have been). However, this also shows his state of mind, and the fact he took a gun, concealed and resisted arrest. I dont think this statement helps win a court case.
Overall, this shooting will be looked at in a lot of ways and I am not 100% sure if it is a bad shooting or justified. However, we have someone illegally carrying a gun, possible assaulting a bystander, a law enforcement officer, and resisting arrest. Given we also know he had the intent to get involved, I think defending the deceased is a hard position to defend.
I really wish the left would make a statement and say stop interfering with ICE, let the legal system work, they are putting themselves, bystanders and others at risk by getting involved. The politicians encouraging this behavior is theater that will get more people shot so they can fundraise and get votes.