The intention behind these posters is to do the same thing the South African lawyers tried to do when they filed the charge of genocide  against Israel with the International Court of Justice: they tried to establish that besides the fact of genocide, there was intent of genocide. Israel has essentially been screaming its intent from the rooftops, but this is barely picked up by Western publics, likely thanks to the complicity of Western media. So it falls to the citizenry to inform each other of the depraved Israeli sentiments that are behind Israel's depraved acts of genocide.