Freedom of the press
Earlier today, I wrote about a local video crew in Ferguson that captured shocking footage of an Al-Jazeera team being tear gassed by the police. Here's a segment from the reporter in question, Ash-Har Quraishi, describing what it was like:
Quraishi says that at the time, they were about a mile from the main center of the protest, and had previously communicated with the police about their intentions.
Vox's Sarah Kliff has further reading on the chemical contained in tear gas, which is banned in warfare by the Geneva Convention, and has not been thoroughly studied for long-term side effects in humans.