The 7th July Memorial to victims of the 2005 bombings, Hyde Park, London, England, United Kingdom, Europe

9/11 Messages on tiles on fence in Greenwich Village, Manhattan, New York, New York State, United States of America, North America

The Libeskind Monument (monument to the victims of the September 11th attacks), Padua, Veneto, Italy, Europe

Destroyed houses from ISIS, Mosul, Iraq, Middle East

Mosul, Iraq, Middle East

Destroyed houses from ISIS, Mosul, Iraq, Middle East

The 7th July Memorial to victims of the 2005 bombings, Hyde Park, London, England, United Kingdom, Europe

The 7th July Memorial to victims of the 2005 bombings, Hyde Park, London, England, United Kingdom, Europe

Car bomb devastation, Beirut, Lebanon, Middle East

Armed Pakistani soldiers with machine gun in village of Pattika, Pakistan

Apocalypse of the Twin Towers, St. John the Divine cathedral, New York, United States of America, North America

Anti-terrorist road barriers to prevent a vehicle attack, Sellafield nuclear power station near Seascale in West Cumbria, England, United Kingdom, Europe

Kings Cross tube station closed due to a terrorist alert, London, England, United Kingdom, Europe

One of the two waterfalls at National September 11 Memorial, World Trade Center, Manhattan, New York City, New York, USA

One World Trade Center also known as Tower 1 and Freedom Tower, Manhattan, New York City, New York, USA

One World Trade Center also known as Tower 1 and Freedom Tower, Manhattan, New York City, New York, USA

One World Trade Center also known as Tower 1 and Freedom Tower, Tower 7 on right, Manhattan, New York City, New York, USA

Names of September 11 2001 victims, National September 11 Memorial, World Trade Center, Manhattan, New York City, New York, USA

One of the two waterfalls at National September 11 Memorial, World Trade Center, Manhattan, New York City, New York, USA

Names of September 11 2001 victims, National September 11 Memorial, World Trade Center, Manhattan, New York City, New York, USA

Political caricature, paper-mache Osama Bin Laden bathing in blood, Carnival (Mardi Gras) parade in Duesseldorf, North Rhine-Westphalia, Germany, Europe

Political caricature, paper-mache Osama Bin Laden bathing in blood, Carnival (Mardi Gras) parade in Duesseldorf, North Rhine-Westphalia, Germany, Europe

DEU, Germany: Basic training for future SWAT Team officers. They learn, during a year long course, all the basics which they need for their job in the special operation police units

DEU, Germany: Police SWAT Team, for arresting armed and dangerous criminals. They are specialists for rescuing hostages. They have special weapons and equipment.

DEU, Germany: Police SWAT Team, for arresting armed and dangerous criminals. They are specialists for rescuing hostages. They have special weapons and equipment.

DEU, Germany: Sniper. Police SWAT Team, for arresting armed and dangerous criminals. They are specialists for rescuing hostages. They have special weapons and equipment.

DEU, Germany: Sniper. Police SWAT Team, for arresting armed and dangerous criminals. They are specialists for rescuing hostages. They have special weapons and equipment.

DEU, Germany: Sniper. Police SWAT Team, for arresting armed and dangerous criminals. They are specialists for rescuing hostages. They have special weapons and equipment.

DEU, Germany: Basic training for future SWAT Team officers. They learn, during a year long course, all the basics which they need for their job in the special operation police units

DEU, Germany: Police SWAT Team, for arresting armed and dangerous criminals. They are specialists for rescuing hostages. They have special weapons and equipment.

DEU, Germany: Sniper. Police SWAT Team, for arresting armed and dangerous criminals. They are specialists for rescuing hostages. They have special weapons and equipment.

DEU, Germany: Basic training for future SWAT Team officers. They learn, during a year long course, all the basics which they need for their job in the special operation police units

DEU, Germany: Police SWAT Team, for arresting armed and dangerous criminals. They are specialists for rescuing hostages. They have special weapons and equipment.

DEU, Germany: Basic training for future SWAT Team officers. They learn, during a year long course, all the basics which they need for their job in the special operation police units

DEU, Germany: Sniper. Police SWAT Team, for arresting armed and dangerous criminals. They are specialists for rescuing hostages. They have special weapons and equipment.

DEU, Germany: Basic training for future SWAT Team officers. They learn, during a year long course, all the basics which they need for their job in the special operation police units

DEU, Germany: Sniper. Police SWAT Team, for arresting armed and dangerous criminals. They are specialists for rescuing hostages. They have special weapons and equipment.

Hand-painted signs Camping and This is our land, please respect it, No urination, East Iceland, Iceland, Europe

Hand-painted sign This is our land, please respect it, No urination, East Iceland, Iceland, Europe

TURIN, ITALY - CIRCA MAY 2021: Egyptian archaeology. Ancient hieroglyphyc, ca. 580 BC, with Isis and the four sons of Horus

Cindy Fairchild, of Aurora, Colo., prays below a six-foot cross in honor of Columbine shooter Dylan Klebold at Robert F. Clement Park in Littleton. Fifteen identical crosses were planted on a hill in the park, one for each victim of the shootings at Columbine High, including shooters Eric Harris and Dylan Klebold.

Black bomb with lit fuse against black background