Protests are more of a ritual than a tactic these days. Protest is a tool, one of the tools in a toolbox to get what you want. They are not an end in themselves. If the protests aren't disrupting anything, if they aren't organized towards obtaining something or making somebody do something, they're not any better than a block party or an online petition.

America is the belly of the beast. No communist organizing in the United States is going to be remotely possible or productive until that beast consumes itself. The balkanization of the United States is basically a prerequisite to any actual revolution there, otherwise you'll just get Bernie-esque folks who are fine with worldwide oppression so long as the treats keep flowing. Any serious reckoning of America's past (and present) of slavery and genocide requires the widespread collapse of the American imperial project and the American imaginary.

The Chilean protest song El pueblo unido jamás será vencido (The people united will never be defeated!) has the exact same sing-along factor and vibe as Bella Ciao, I imagine it's what you're looking for.