For instance, high level executive Bryan Malinowski was executed by the ATF and barely anyone noticed, but if the courts had sentenced him in such way, there would be great outrage.
* the ATF decided not to raid his home when he was out of town but early in the morning when he was at home
* the ATF gave him 28 seconds to comply with their announcement after which they battered the door down
Given the fact that the agents weren't wearing body cameras, the guy had a normal day job that he'd go to, and that 28 seconds is certainly too short to dispose of firearms it does seem a lot like execution served by way of search warrant. Certainly, I wouldn't be able to let anyone in 28 s after waking up to pounding on my door.
He was shot after opening fire, unprovoked, on federal agents performing a search of his home under a lawfully obtained warrant.
I can understand if there's some imminent threat but there was none. He was going to wake up, and report to a secure airport full of cops and federal agents. But they couldn't resist engineering a situation that ended up with him dead, doing what anyone would do to protect their wife when given ~zero time to distinguish threats entering their home at night.
Now you can argue maybe it wasn't an execution, and only their acts were indistinguishable from what those doing an execution would do.
The ATF in this instance (and frankly most instances) chose the most violent option available to them, because good people don't join the ATF. Violent thugs who get off on shooting dogs join the ATF. And when they get tired of shooting dogs, they decide to manufacture a scenario where they get to kill a more dangerous game.