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A similar one. More Banksy. More political graffiti.
And then there’s this one, which I find highly amusing:
Also this one by Banksy:
And, finally, this by Fra.Biancoshock:
More on CCTV and privacy. More political graffiti.
Here’s a scatological variation:
More on urbanization is here, and here‘s something about the link between urbanization and poverty. More political graffiti is here.
More on the possible harms caused by pornography. More on pornography and the right to free speech. More graffiti.
OK, not really graffiti, but still “street art” in some sense of the word. More on private property rights, and more graffiti.
Mural by Ben Slow in London, Hanbury Street, depicting a member of The English Defence League and an Islamic extremist/professional protester known colloquially as “rage boy“:
More graffiti here.
I hold the somewhat unorthodox opinion that people can waive their human rights; read it here. This graffiti by Dolk nicely captures this opinion. More Dolk here. More political graffiti here.
Somewhat insulting but not without an element of truth. More Blu here, here and here. More political graffiti here.
Isaac Cordal makes lovely miniature sculptures, puts them in the streets and photographs them from a low angle.
Read about the Troy Davis case here. More on capital punishment in general here. More political graffiti here.

More on self-censorship and free speech. More Blu here and here. More political graffiti here.
Similar “works” are here, here and here. More about homelessness and hunger. More political graffiti.
Well, not exactly “graffiti”, but street art in the general sense of the word:
More about CCTV, big brother and privacy. More political art. More political graffiti.
More on corporate social responsibility, on capitalism and on resource depletion. More Blu. More political graffiti.
More on the war on terror and on security. More graffiti.
More on capitalism, corporate governance and corporate democracy. More Banksy. More political graffiti.
More on 9-11 and the war on terror. More political graffiti.
More graffiti on democracy is here, here, here, here and here. More textual information on democracy is here. More political graffiti in general is here.
More about equality before the law here, here, here and here. More political graffiti.
Another variation:
Give a man a gun and he can rob a bank. Give a man a bank and he can rob the world.
The latter being a references to recent bank bailouts. Another variation is here. And another:
And also this:
More on development aid – the context that produced the original line about giving fish vs teaching to fish - is here. More political graffiti is here.
More on Princess Hijab. More on the Muslim headscarf and on gender discrimination. More political graffiti.
More Banksy. More on Israel and Palestine (more specifically on the wall). More political graffiti.
A similar one:
More Banksy here and here. More on income inequality. More political artists.
More on the role of knowledge and intelligence (or even expertise) in politics, especially democratic politics – democracy is often derided as the rule by the ignorant masses – is here, here and here. More outdated anti-Bush tirades are here and here.