What you showed is a paid advertisement from a US-registered 501(c)(3) nonprofit, JewBelong, with public accounting on all donations, and a relatively clear mandate for how it spends its money.
Again, you're simply saying that a (really only slightly edgy) billboard paid for by your fellow americans with their own money and aimed at changing your opinion via argumentation should be disallowed as "propaganda" simply because you disagree with it (and again: I disagree with it too!).
Tough love: of the dueling philosophies at play here, yours is by far the most dangerous. Let people argue with you, for crying out loud.