Originally posted by mattt Is it ethical to support that work by making consumer purchases of items using the fruits of those researches?
In a perfect world, the answer would be no.
The problem is, where to draw the line and how to verify and enforce it.
For your specific example of surveillance cameras and facial recognition software: this technology is not only used in authoritarian states, so how do you proof a specific code in the software is the result of illegally obtained (or at least unethically obtained) data.
Data protection, where this is basically a subarea, is a treacherous area in general, even in countries with strong privacy regulations, those laws are often ignored or bypassed in reality.