In your stride to achieve 100% purity and 100% good, you got blindsided and don't see that rejection of way less than an ideal solution in favour or 150% terrible solution. There are people dead today that could be alive if the party of evil wasn't in power, and this includes people in Palestine. If you give a single shit about people's actual lives and not just purity politics, you categorically have to be in favour of harm reduction.
Democratic party as an organisation isn't great on the genocide question, but it's undeniably better than the other one, and in two party system it's the most important part, everything else comes later. Fucked up system, for sure, but it's one that exists