That's happened many times. Some times they've killed the homeowner! Drug raids gone bad.
I'm more bothered by inadvertent drug raids. the feds can listen to my phone converstaions all they want, maybe they can shut down the phone on my kids....
In DC, the "wrong" homeowner had a heart attack and died - when the FBI busted into her house, knocking out the front door.
No joke.
I think it could happen to me - I'd be so shocked that someone would be battering down my front door.
More than that, I worry about the FBI smearing someone I know by naming them a "person of interest" when they've done absolutely nothing wrong - as the FBI have been wont to do over the past several years.