Yes, I saw that and it's an interesting witness. He says he actually saw the shot and the shooter running, and that he even reported it to the police when they got that Zinn man and told them that he was definitely not the shooter because he had just seen the actual shooter running, that he was in tactical gear and looked like a professional assassin.
Here's just that part of the Candace show, for those who want to see just that piece:
Okay, now we're maybe getting somewhere!
So, maybe it went something like this:
The Deep State [DS] (factions of the CIA+FBI, Mossad, others) duped Robinson to take a rifle (which he was handed some days prior) to the event, plant it somewhere in the bushes, so that an assassin could then use it to shoot CK. Robinson had previously been identified as being 'fertile ground' for programming and radicalization (trans, woke etc.), so after some grooming it was easy to get him to agree to help with the plot. But, he believed that it was all he had to do, just plant the rifle, and the rest would be taken care of. Then, the professional guy in tactical gear and balaclava entered the scene and took the shot with a smaller rifle with some kind of smaller special bullet that disperses as it enters the target, and thus doesn't produce an exit wound. As Robinson learns of the shooting having taken place, he believes that "his" rifle was used.
Immediately after the DS guys in black suits pay visits to the 'normal' FBI and other law enforcement guys, saying something like: "Okay, so you've seen in your footage how a foreign looking sniper in camouflage took the shot. Now, it's a matter of national security that this information does not get out, we don't want anyone to know that a foreign agency (Mossad) was behind this! If this leaks out, it will be an international scandal and the whole world will be in danger! Lucky for you, we have a script ready that will cover up things nicely (hands over the script framing Robinson as the shooter)"
Robinson feels guilty because he believes that he aided the killing by providing the rifle. So, when they arrest him he doesn't protest too much, but doesn't admit killing CK either. But the DS guys 'act dumb' and charge him with the murder, because they have enough evidence (the 'wrong' rifle, maybe some text messages, video of him hiding the rifle etc.) to convict him.