And look at this whole range of cycle based innovations cycle that's a sprayer, cycle that generates energy from the shocks on the road.

And with that, what this graffiti says is, High tech schmigh tech.

The walls of many of the house's rooms had graffiti scrawled across them.

And I saw a lot of graffiti from the 1800s, like this one.

I was doing graffiti writing my name everywhere, using the city as a canvas.

I was doing graffiti writing my name everywhere, using the city as a canvas.

These kids did a little graffiti on their desks, and then they signed up for two extra courses.

And this graffiti artist has come along, made this sign a little bit better, and then moved on.

I was looking for a picture of graffiti, little text input language, and I found the website dedicated to teachers who want to make these, you know, the script writing things across the top of their blackboard, and they had added graffiti to it, and I'm sorry about that.

One of the tricky issues we had with the Giuliani administration was I had forgotten how anti graffiti he was.

Some of those taking part in the protest could be seen writing graffiti on the walls against the interim President Michel Temer.

The walls were left with gaping holes, floorboards were ripped up, rubbish was strewn over the floor and graffiti was daubed on the walls.

And they wanted to celebrate what's beautiful about Kibera and Mathare the photojournalists and the creatives, the graffiti artists, the teachers and the entrepreneurs.

As you can see, he's heavily influenced by graffiti and street art, and his home city of Mumbai is an ever present element in his work.

And before I tell you about that, I just have to tell you this one little picture of graffiti there I picked off the web the other day.

The murals were done by a graffiti artist to commemorate the hundreds of homeless people that got relocated from the tunnel in 1991 when the tunnel reopened for trains.

But I was in Milan and saw this street sign, and was very happy to see that apparently this idea of minimalism has even been translated by the graffiti artist.

It adopted the slogan Keep the promise for the Millennium Development Goals Campaign and agreed on a common visual identity a graffiti style logo for use by the United Nations system organizations.

Property has been defaced with graffiti for example, the slogan No return for Serbs in Albanian, signed by the Albanian National Army, was painted on the municipality building in Obilic in December 2004.

Then the IDF occupied the TV station itself and destroyed it, along with the team s computers and cameras. The documentary s footage of shot out computer screens and piles of smashed printers and cameras under graffiti reading Palestine Never makes one despair.

The fix, as it's called, may be much more difficult for the dominant society than, say, a 50 check or a church trip to paint some graffiti covered houses, or a suburban family donating a box of clothes they don't even want anymore.

Minorities' fears are fed by isolated incidents, not always condemned or addressed by local political leadership, in which transport services for minorities are stoned hate graffiti are painted on municipal buildings unoccupied minority houses are looted and minority language rights are not respected.

And a few years ago, I was walking in Tel Aviv and I saw this graffiti on a wall, and I found it so compelling that by now I preach it to my students, and I'd like to try to preach it to you.