I don't see the point of any of those examples. You don't blame the bank when fraud happens through it's accounts unless the bank knowingly let it happen, your second example is a false equivalence as selling ammo to another country is definitely grounds for treason if we are at war with that country, not to mention the regulation surrounding the sale, and the third example is silly - if the government needed to discriminate against you, they don't need Palantir to do that, so why would you blame Palantir if they choose to get paid for something that will inevitably get done?

My point is you should be directing your criticism to government data collection practices that enable them to have data to process, once that 1st step is achieved, it doesn't matter who achieves step 2, 3, 4 or beyond, so your focus on Palantir is fleeting at best.