Simple, relatable, cool looking. One of my favorites lately is this. Otherwise, just slap leftist stickers up, print off fliers and pamphlets that point out contradictions, target workplaces and specifically areas that customers don’t go to as much and are frequented by workers (smoking areas, loading docks, dumpsters, backdoors, etc.)

Here’s an example

In the end, propaganda is only as good as the organization that it’s propagandizing for. Getting people agitated is only a small part of the battle.