I don't know enough info here to give a good opinion on this incident. I will list out what I've been able to garner. Whether it is true or not time will tell. Here is what I have found out. Again I am not saying these are the facts yet. News seems to be very spotty on this one so far.
1) Jacob was at a scene of a fight of two girls trying to break them up.
2) Cops were called and arrived on scene after the fight had stopped but everyone still around.
3) They ran his plates and saw he had an arrest warrant out.
4) They went to grab Jacob to arrest for the warrant. Instead he shouldered past them and pushed them out of the way.
5) The cops tried to use a tazer on him, but he completely ignored the taser and pulled out a knife.
6) Jacob walks back to his vehicle with knife in hand before putting it back in his pocket. Cops already have guns drawn and are pulling on him trying to get him to comply.
7) Jacob gets to his car and leans in with one cop still pulling on his shirt. At this point that cop fires. He fires 3 times, there is a little movement, and then he fires 4 more times.
In the video it is hard to tell if Jacob is holding a knife and as always these videos start late into the incident. There is a point as he is rounding the car that it looks like something is flashing in his hand as he puts his hand near his pocket. I am not saying this is a knife or anything. Could be keys. I don't know. A few more notes about Jacob.
He was a registered sex offender. Had been sent to jail twice for assaulting police officers and drew a gun on one in the past. He had an arrest warrant on him but I am unable to find the details for what. Again these are what I've seen stated about his past and don't know how much of it is relevant to case even if true. If the cops ran his plates when they arrived on scene, they would more than likely know the details of his criminal past.
If what I have read is true then it is a tragic death, but all on Jacob. Again we still don't know all the details, so I am reserving judgement still.