For me, corruption is the all-encompassing message.
Trump, his oligarch buddies, and a complicit GQP are rigging the country’s entire socioeconomic system against average Americans in plain sight. Frankly, it’s pretty fucking apparent and straightforward to point out with inumerable examples across the board. Plus, it doesn’t require a lot of higher thinking or complicated explanations. Finally, as a phenomenon, corruption doesn’t have an inherently liberal or conservative bias, and it’s not racially tinged or about any marginalized group.
Every ad, speech, or argument should begin with the thesis statement: “You are getting fucked by the most corrupt administration in US history.”
Then, follow up with umpteen examples based on the specific concerns of whichever audience is before you, whether it’s made up of old people (Medicare/Social Security), small businesses (tariffs/preferential tax breaks for megacorps), families (tax break for billionaires/environment and safety regulations) marginalized groups (they already know this), young people (education/student loans), etc.
Again, their corruption is widespread and out in the open, but Americans are too stupid or blinded by their hate to see how it hurts them. The gift is just sitting there, wrapped in a bow under the tree. Even if you have to grab, unwrap, and set it in their lap, do so.