Arab protester throws stone during clashes, Florence, Tuscany, Italy, Europe

Independence Day, Ukrainian national flags flying in Maidan Nezalezhnosti (Independence Square), Kiev, Ukraine, Europe

Views of banners outside Russian embassy protesting war in Ukraine in the old town in central Tallinn, Estonia, Europe

Protest, italy. Demonstrators soaked by polices water cannon during the g8 summit in genoa

Protest, uk. London. Islamic fundamentalist rally

Cuba, rally in revolution square. Havana.

Protest mural depicts struggle between Protestants and Catholics and ethnic cleansing painted on house wall in Belfast, Northern Ireland

Protest mural depicts The Siege of Derry painted on house wall in Belfast, Northern Ireland

Amnistia banner at Zubialde promoting Amnesty, after 29 years of protests, in Biskaia Basque region, Spain

A protest camp against fracking at a farm site at Little Plumpton near Blackpool, Lancashire, UK, where the council for the first time in the UK, has granted planning permission for commercial fracking fro shale gas, by Cuadrilla.

Protestors at a climate change rally in Parliament Square London in December 2008 with Big Ben behind, London, England, United Kingdom, Europe

Protestors at a climate change rally in London in December 2008, England, United Kingdom, Europe

Protestors at a climate change rally in London in December 2008, England, United Kingdom, Europe

Protestors at a climate change rally in London in December 2008, England, United Kingdom, Europe

Protestor at a climate change rally in Parliament Square London in December 2008 with Big Ben behind, London, England, United Kingdom, Europe

Protest banners at a climate change rally in London in December 2008, England, United Kingdom, Europe

Protest banners at a climate change rally in London in December 2008, England, United Kingdom, Europe

Protestors at a climate change rally in London in December 2008, England, United Kingdom, Europe

"Black lives matter" sign and gay flag on building, San Francisco, California,

Anti-Atom-Trek 2010 from Gorleben to Kruemmel, demonstration trek against nuclear power, driving through Bienenbuettel, Lower Saxony, Germany, Europe

Symbolic nuclear waste barrels stacked on a loading platform, anti-nuclear demonstration against the Gorleben disposal site, Lueneburg, Lower Saxony, Germany, Europe

Fitness App. Sporty Fit Young Lady Holding And Pointing At Smartphone With fitness app While Training indoors. Smiling Woman Demonstrating screen of mobile phone

Mannheim, DEU, 25.03.2004, ICE near Mannheim

Protesters gather to march through the streets of downtown Birmingham, Alabama.

Protesters gather to march through the streets of downtown Birmingham, Alabama.