I work at a huge advertising company that's using machine learning and personal information from cookies, etc. All I do is manage devops work flows. What am I supposed to do, quit? Where am I supposed to get a job with no ethical concerns?
Show concern about the data that is collected, how it is collected, how it benefits others, how it is safeguarded. Offer operational alternatives that have a lesser negative impact with comparable benefit. Challenge people to show how that their algorithms treat people equitably and don't exacerbate existing disparities. Get a job somewhere else in an industry that helps people or positively impacts society in some way. Quit and quietly wage cyber-war against your former employer from an abandoned missile silo? Just spitballing here.