Here's the reality; we're all playing the trolley problem but it's with real people and unfortunately the only options are kill more people or kill less people. If you know that by not voting you're killing more people then you can't claim you're not responsible for their deaths.
If you really care go out and protest the system after the election. Choosing to let more people die now is a protest but you have blood on your hands.
Choosing not to vote is participation whether you like it or not. Your so called protest doesn't help change the system either. All it accomplishes is kill more Palestinians. It's a fucked up system and we should absolutely do everything we can to change it, but not voting doesn't absolve you of the excess deaths of innocents.
You have a chance to help people but you're too morally pure so instead you choose to plug your ears while they get murdered and tell yourself letting them die was the right choice morally.
If Trump wins and Israel ends up murdering everyone, I'll come back to this comment and remind you.