That's a great idea. The only problem would be determining the correct set of things to be protested at any given time. So I'd suggest grouping them into flavor

That's a great idea. The only problem would be determining the correct set of things to be protested at any given time. So I'd suggest grouping them into flavors - say US liberal or US conservative flavors. You just choose the one you subscribe to and then let the service decide whether to insert say BLM or anti-CRT messages at any given time.