SWAT teams moved in and tear gas canisters were heard from the perimeter of what had essentially become a militarized zone.
The mob flipped over a news van, tore down two lampposts, and threw rocks and cans; police responded with riot gear and tear gas.
All of the square was covered with an orange haze from flames and tear gas.
tear gas was launched at protestors as chairs were thrown back.
ElBaradei was greeted with water cannon and tear gas when he and his supporters exited Friday prayers.
There was tear gas hanging about, too, and we all felt anything but cheerful.
They had flashlights and guns and tear gas, and their faces were grim and desperate.
In going through the village, our eyes commenced to be irritated by tear gas: the bombardment was infernal.
The tear gas which we prepared to manufacture was brombenzyl cyanide.
Calhoun was familiar enough with tear gas, used by police on some planets.
tear gas (tēr)
A gas that causes irritation of the eyes and profuse tearing.