If you want to fix this, your path is easy:

Vote Democratic in the general election because there's never going to be a anti-genocide Republican. Ever.

Take a page out of the Republican playbook and campaign against AIPAC-backed Democratic candidates in primaries.

Why do you think there will be anti-genocide democrats? There don't seem to be any that approach any position of power. Why do you think genocide is supported in the first place?
Why do you think "vote harder" is the answer? What financial interests would support anti-genocide? Why does AIPAC exist and why does it have power?

Complaining about candidates in the general election is too late and actually depresses Democratic turnout. You need to dot he hard work of signing up registered voters and getting good candidates at every level.

Complaints come from the very real fact that the Democrats are actively supporting genocide. The blame for depressed turnout is not on the people unhappy with genocide, but on the ones supporting genocide. Voting for genocide even harder isn't going to work against genocide.

Democratic voters have a big problem with not showing up in off-cycle and local elections, and that abdication of responsibility is largely why the corporate wing of the party has the influence that it does. Republican voters show up to every single election, even the primary for town dog catcher.

Wrong order of operations. The corporate wing has the most power because they are the reason the Democrats have any power, by sucking up to their donors. The progressives are kept on a leash and allowed to bark so that the working class thinks they have a real voice, despite the reality that Capitalists will remain in control. This drives away voters, yes, but keeps funding up.