Tear gas spreads through the air.

Protesters flee tear gas in Tunis.

Tear gas engulfs the air in Tunis.

Water canons and tear gas were used as well.

Tear gas unbearable. Mosa'ab Elshamy ( mosaaberizing) August 14, 2013

When police attacked with tear gas, pieds noirs opened fire.

The police fired tear gas at the protestors, dispersing them.

They arrested, threw tear gas, fired at and beat students.

Clouds of tear gas in central Manama as opposition march broken up.

The tear gas team leaves the World Cup in a scandalous manner

Police responded by using tear gas, batons and electric batons to disperse them.

It then escalated to live and rubber ammunition and intensive firing of tear gas.

Police use tear gas to disperse protesters outside the Interior Ministry on January 14.

Global Voices author Afef Abrougui tweeted Martyrs' Day full of tear gas 9avril tunisie

Last month the Sudanese government responded to peaceful mass protests with guns and tear gas.

Witnesses saw police deploying tear gas against survivors, and blocking ambulances trying to reach the injured.

Protest back on inside district, wad nubawi fighting back, police cars in sideroads firing tear gas houses

Also, here is the transcript of the US State Dept comment on the tear gas used in Egypt.

Peaceful marches have been attacked with live bullets, expired tear gas, cannon sewage water and batons, resulting in killings, injury, suffocation from gas, torture and arbitrary detention.

On encountering resistance, the Federal Police was called, and around midnight the Immigrants' Hotel was attacked with tear gas.

The plant was built over the period of 1927 to 1929, and was home to a chemical weapon facility that produced over six kilotons of mustard gas and tear gas.

The sit in was broken up by force and by using tear gas which suffocated some residents inside their homes Rades

Protesters holding tear gas used by the authorities against them. Photo by activist Abdel Fetah Ould Habib on his Facebook page.

Police fired tear gas and used batons against protesters and were seen throwing punches as they tried to disperse the crowds.

This morning, the Central Security Forces tried to violently disperse the crowds who camped overnight in the square using tear gas bombardments.

One Kurdish politician, Ahmed Turk was hospitalised, and 32 year old Alaattin Okan was hit with a tear gas canister in Batman.

According to Bedoon Rights, the security forces used rubber bullets, smoke bombs, tear gas, sound bombs, and for the first time shotguns.

He was referring to the government of Bahrain's use of Brazilian tear gas to violently stop protests (warning, link contains graphic content).

In an attempt to control the situation, police threw tear gas. Hundreds tried to flee the stadium away from the gas, but the doors in the north gallery were closed, trapping people inside.

Reports say that the deceased died due to tear gas exposure, while the Ministry on Interior says he died of a heart attack.

A thousand riot police used rubber bullets and tear gas on the workers, and hundreds were injured, but they did not back down.

NickKristof Or as a giant tear gas canister? RT acarvin NickKristof Dress up as a tall, delicious milkshake and you'll be just fine.

In the video, the umbrellas that protected the protesters from police pepper spray and tear gas were depicted as parachutes and ray guns.

Mubarak is innocent, people protest and take to the streets and Sisi attacks them with tear gas and gun shot and arrests them

Regime forces surrounded the prison, shooting live ammunition, petrol bombs and tear gas into the crowded facility after prisoners took some guards hostage.

Another leading player in the tragedy, police commander Jorge de Azambuja, said later, I ordered tear gas bombs to be thrown into the galleries.

In an attempt to dialogue with the police, President Correa suffered a tear gas assault and is being treated at the Metropolitan Hospital in Quito.

Psypherize A new tear gas shipment 7 tonnes heavy just arrived in Cairo from Suez and stored by the MOI. Get ready for another crackdown.

The sum of the above is 928, September 28, the day when the police deployed tear gas to peaceful protestors who resisted with their umbrellas.

Brazil is allegedly an exporter of tear gas to Bahrain, used to suppress demonstrators since anti regime protests started in the country on February 14, 2011.

Authorities responded to the protesters' demands of employment, freedom, and national dignity with live bullets, and tear gas, killing more than 300 protesters and injuring many more.

On July 15, authorities used batons and tear gas, to prevent protesters calling for political and judicial reforms from organising a sit in outside the Cabinet Building.

Alliance For Kurdish Rights has uploaded several pictures, showing Turkish riot police have used tear gas and water canons to disperse protesters from the district of Yuksekova.

On Monday, a bigger protest took place in Taimaa, where protesters gathered, in which police used tear gas, rubber bullets, water cannons, and smoke bombs to disperse them.

elkammar I pay my government to get a better tear gas, a better way to kill me and my brothers And to show their solidarity with the workers, many Twitter users shared the following message Ahmed_hosny_s I announce my full solidarity with the workers in Suez customs who are being questioned now for refusing to receive the tear gas shipment sent to the Egyptian Ministry of Interior