Tear gas

Okay, yesterday near from were I study was a manifestation
On my institute they didn't want to suspend the classes (I even had a test yesterday during the manifestation), so they just close the doors during it
But when the thing get violent the police start to throw the "tear gas" is like pepper gas but worse XD
Even with close windows and doors it can still get pass, I wanted to go to the bathroom on sector C but the gas was worse there, so I had to run away to sector B, the effect was low there xD

I can still feel the gas on my skin and throat, I hope the effect is totally gone today