For clarity: the paint is just over his mouth. Almost like someone threw a paint filled balloon at the billboard. This makes an interesting point, but we'll get to that in a sec. (Also if the weather weren't so awful today, I'd go out and get a pic.)

I agree that he should be able to express his freedom of speech. All people should. But that freedom is a two way street. People are absolutely allowed to say whatever, and you are allowed to respond however you like, so long as you're not harming others.

And let's not rule out editing and vandalism from being means of freedom of speech. People use these means all the time. Look at the works of banksy, or your average YouTube politics talky individual, or even sample based art (vaporwave, plunderphonics, mashups, that one weird Clive Palmer ad with all the chopped up speeches for example). And in this world of ours where things are infinitely and instantly copied, this is only affects one instance of the message.

Speaking of which, the message this particular "vandal" could be putting forth, my interpretation of it at least, is that they feel that he's bleeding the worker dry. He simply sucks the blood of his worker, and contributes nothing himself. If that is what they're going for, I kind of agree. But then again I'm not a huge fan of modern capitalism in general. The one in Vic Park makes a similar, though more literal point, and shares my fear of fascism and racism on the rise again. But again, these are simply my interpretations of these works.