But the innocent person being killed is the issue. Police have to know that there is a strong possibility when they bust into a home, that more people than just the person they are looking for could be in the home.
SWAT teams train for that and train often for that. They execute these throughout the year and you never hear of any complications until something like this happens.
Ultimately this practice is probably due for some review, but it's also not just the cops "executing" a black person like the original story pinned it as. It's a tragic accident whereby police executed a lawful warrant and lawful entry of the premise of someone wanted for murder, his cousin happened to be there instead, and drew a weapon on police during the entry. Like I said, really tragic accident.