NYC Open Data is a fascinating resource. I used to think data was dry and boring, to be honest. I didn't realize the potential for creation with data until quite recently.
Originally, when searching for a data set to work with for the time period after Eric Garner's death, I looked for emergency-related information and something protest related, perhaps.
This was the original set I decided to work with - the information messages received by the Office of Emergency Management about emergency events and important City services for December 2014.
But after playing around with the site a little more, I came across this set from the Department of Sanitation of all places - a log of all graffiti instances throughout the five boroughs for December 2014. I wish there was a column for what the graffiti actually said, but I think it is interesting that the police precincts are included in the organization of the data.