Defense is the sanitised version.

Let's say you program code for a hellfire heat tracking missile. Now sure you can tell yourself it's only going to be used by the good guys but really you know at some point your code is going to be responsible for someone innocent getting killed.

So there's probably that bit of people with morals and a conscience who have an issue with the 'defense' industry.

How exactly does your drone defend? Does it do it by being a good offense?

That may give you an idea of why you are getting judged.