@fosdem That “free” word you keep using refers to “freedom”.
”We aren’t selective about about sponsors and sources of donations” is tone-deaf, reckless, & simply not acceptable in 2018 for any group that seeks legitimacy in the ethics of what they do.
Palantir develops open source (https://palantir.github.io) and also helps ICE find & deport asylum seekers. By your (lack of) ethical standards, they would be welcome as a sponsor.
Please see https://fundingmatters.tech and review your stance on this.