Not at all...
Like Rittenhouse, Fields said that he felt threatened by the crowd, which was maybe banging on his car, and that fear drove him to floor it through those protesters.
Rittenhouse said that he felt threatened by the crowd, but didn't say that is because he shot someone in the back and they all saw him do it.
So then he thought his life was in danger because they were trying to disarm him, which is why he then shot TWO OTHER PEOPLE, one of whom wasn't even there to disarm Kyle, but provide medical help to the person he shot first.
Kyle was a mass shooter, so the crowd was justified in trying to disarm him by any means necessary.