Sometimes "no-knock" warrants can cause the deaths of police officers when they otherwise wouldn't have. Check out this case, which happened in my buddy's neig

Sometimes "no-knock" warrants can cause the deaths of police officers when they otherwise wouldn't have. Check out this case, which happened in my buddy's neighborhood: http://hamptonroads.com/2010/01/ryan-frederick-loses-appeal-copshooting-verdict http://hamptonroads.com/2010/01/ryan-frederick-loses-appeal-... TLDR: No knock raid with officer trying to batter down door, guy inside with small amount of weed who had previously been robbed by armed intruders fires through the door and kills officer.