The message should be for the US to stop sending money to Israel. Israel isn’t going to stop this shit in the name of “peace”. The best any US citizen can do is constantly berate the US for sending money to Israel. Biden needs to know he’ll lose to the orange man in November if he doesn’t take note. When you protest you need a clear demand, and the US could definitely stop sending money to Israel.
But only one of these two has the capability to and is actively working towards wiping the other off the map. I’d say any lasting peace would have to start there.