SWAT teams are meant to first respond to dangerous calls. Hostage Situations are not easy and the innocent man who got killed is the result.
The man who shot him is responsible yes, but this would'v never happened if the false SWAT report was not made in the first place. a man was killed because a stupid little COD player got so mad he played with fire, and someone was killed by it. the person who reported this should be charged for manslaughter as he orchestrated a deadly unit to SWAT someone's home and got a man killed.