No, that is not true, at least according to the video I saw and the witness testimony I read. Feel free to send me any links that show that Rittenhouse killed someone prior to running away - I am trying to form an opinion based only on facts, not on my own personal opinion.
According to the testimony I read and the video I watched, Rosenbaum threatened to kill Rittenhouse before chasing him. Rittenhouse was videotaped RUNNING AWAY from Rosenbaum BEFORE he killed anyone.
IF Rosenbaum, Ziminski, etc., had let him run away, NO ONE would have been killed.
According to Rittenhouse, he heard Ziminski tell Rosenbaum to "get him and kill him". There was another witness that testified that this is what happened. According to actual video footage, we can see Rittenhouse running away from Rosenbaum. Why was Rosenbaum chasing him?
When it comes to a murder trial, my opinion or your opinion doesn't matter. The background of the defendants does not matter. For example, it turns out that Rosenbaum had been convicted of molesting a child. That, however, is IRRELEVANT to the case. Just like any association that Rittenhouse might have had with the Proud Boys is irrelevant. Just like a woman's sexual history is irrelevant in a rape case...
Rittenhouse was trying to get away when Rosenbaum confronted him. He may have tried to take the gun away from Rittenhouse, which is when he was killed. The reason there was conjecture that Rosenbaum tried to take the gun - there was gunpowder on his hands.
The second guy who was shot was beating on Rittenhouse with a skateboard and injured him. The third guy testified in court that he was pointing a gun at Rittenhouse when he was shot.
If the mob had let Rittenhouse run away, no one would have died.