This is an ethics philosophy question that has been in my craw for a while. Let's say an Objectivist invests in equities to make money - of course. We'll call this investor, "Joe". Joe sees a company whose profits are growing, a manufacturer. He learns that the company makes a product, on government contract, that flies in the face of Objectivism. For the sake of argument let's say they make rail cars with shackles in them to transport citizens around. The government has a contract with this company to produce a few hundred of these cars and profits are way up. Joe knows that, eventually, these cars will probably be used to force people into situations they normally wouldn't go along with without the use of force. Should Joe invest in this company while the profits are growing and share prices are rising? What are your thoughts?