Vox: Why it’s so important to film police

Taking photographs and videos of things that are plainly visible from public spaces is your constitutional right. That includes federal buildings, transportation facilities, and police and other government officials carrying out their duties. Unfortunately, law enforcement officers often order people to stop taking photographs or video in public places, and sometimes harass, detain or even arrest people who use their cameras or cell phone recording devices in public. Know Your Rights When Taking Photos and Making Video and Audio Recordings