There is nothing to prove any of what you just said. They confiscated his gun, they took him to the police station, they interviewed him. No one can say for sure what extra evidence was collected, or what their witnesses substantiated.
They are convening the grand jury to determine if probable cause exists. Due process is simply being followed.
And you know, if they actually HAVE all this actual evidence that supports the idea that GZ was viciously attacked and was in fear for his life with good solid reason....WHY did they not make that evidence available to the family and others....could have saved themselves a great deal of problems
If the family and the public could be shown and were confident that a thorough solid investigation actually DID take place and that solid evidence that supports the self defense claim was there....there most likely would not be the media coverage that there is, but they have not shown anyone any kind of actual evidence beyond lip service that there is evidence and it makes people think cover up.....