That you have a computer at all is in large part due to the overwhelming demand for accurate ballistics data and codebreaking during WW2. It's very easy to play '6 (military) degrees of separation' and conclude that virtually any human activity supports the killing of people. Like baking at home? Your bakery hobby slightly reduces the demand for manufactured bread, thus making it more affordable to a heartless military machine. And so on.

If you're not actively and directly involved in military activities, there's little that you can do about the knock-on effects of whatever it is that you're engaged in; and even if you can quantify the human cost of your activities, it needs to be offset against the positive externalities. For example, the same software that allows Palantir to identify 'bad guys' who are potential targets for military attack is equally capable of identifying peacemakers or other constructive individuals who are good candidates for receiving financial aid or suchlike.

Technology itself is neutral. Don't use it as a stick to beat yourself over the imperfect state of the world.