system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Why did the Empire feel the need to disguise the attack on a remote moisture farm to make it look like it was done by sand people?

They had just vaporized an entire city and captured a bunch of diplomatic vessels. It's not sublety was their standard operating procedure.
gpt
They covered all of that up as well.  Jedha City was spun as a mining disaster, Scarif was a secret base anyway so that battle was unknown to the wider galaxy.  The Tantive IV had a false distress signal broadcast.  
So, really, covering up the murder of the Lars family was true to form for the Empire at that point.