From a graphic point of view, this is a good image, perhaps even very persuading. Its strengths are a positive opposition (down/up, symbolized by the hands), and an identity by phonetic similarity (ferma/firma (stop/undersign)) that subsequently resolves the visual opposition.

The reading of the superior part from left to right, as usual, elicits some perplexity because it gives Abbasso/ferma, ie. Down/stop. Is it ++ (as greatly probable) or + - with a hidden opposition? Is it an identity by semantic similarity (down and stops, both overthrow the negativing of the death sentence)? Or "down" probably could turn down "to stop" as negative (down to stop, hidden opposition)?