Here's an idea: the next time someone asks women to leave because they're not allowed to hang out with men, respectfully suggest that all men leave instead.
Maybe the best way to combine a hackathon and political activism is to hold them in places where people do not shot political activists. Its not the best choice, but what is the alternative?
Of course, Hamas is run by crazy people; who knows if and how they'd react. I didn't mean to say that my imagined response would be without any risks either. It certainly takes courage to do anything against Hamas from within Gaza.