It all started with a single event page post by 23 year old Synead Nichols and turned into one of the largest protests against police brutality since the non-indictment of Darren Wilson, the Ferguson, Missouri police officer who killed the unarmed 18 year old black man Michael Brown. Protesters marched in support of those killed by police in NYC such as Eric Garner and, more recently, Akai Gurley.
The protests were largely peaceful with only one documented arrest. The police seemed to have taken a very hands off attitude towards the protesters, even in areas where there was no permitted march. Only time will tell whether this sort of organizing will translate into lasting change.