I would if I were inventing dynamite, but that's not what this scenario is.

A person working for a knife manufacturer need not worry about it being used for murder, as that's not what the primary use. And facial recognition is a lot less harmful than even that.

Trust me: I work for a company that produces certain goods used for all kinds of good and nefarious purposes depending on who buys it. My conscience is clear.

> But, let's change it a bit more personal. You write an awesome OSS yaml parser. It's so good, that GFW of China uses it as a main component, and this gets published in the news.

> What would you do? Nothing you did changed, but suddenly your work is powering an unethical component.

I wouldn't do anything:

1. This is milder than the knife scenario above. Of course I don't care if people use it in a poor way - unless there is a straightforward technical mitigation I could do. In your example, given that the source code is available, that is not an option.

2. There's a certain hypocrisy in releasing something as open source and then complaining about how it is used. If it bothers you, then modify your license!