[user104658]

Hmm. That does sound plausible if the police weren't wearing masks (any photo receipts for that?) and yes, the gas would linger so you couldn't clear people from an area using tear gas and then immediately move through that area without protection.

However that only makes it semi fake news. I'm not really convinced that clearing a crowd with smoke grenades (which yes would also cause minor eye and chest irritation) so that the pres can take a propaganda photo makes it OK? It's still absolutely ****ed.