Here's the video with the supposed Molotov.
Whatever is being thrown, it seems Rittenhouse opened fire after that but did not actually hit the thrower as I've seen another video of the thrower lying in between two cars so it seems he got shot after that and I think I see him still chasing Rittenhouse after the kid opened fire in response to the thrown object.
The details of everything else around this are fairly muddy at the moment but the actual shootings are caught on camera and appear conclusive to me to be purely self defense, the kid was running the whole time and only opened fire once his pursuers attempted to use force on him. Regardless of what else he may be rightly charged on, I do not believe 1st degree murder is one of them.
No, I do not believe he should have been over there but then again I don't think any of those people should have been doing what they were. Those people were attempting to attack him, and only the people that attacked him were shot.