15 years of racial segregation in NYC

Using the US Census and ACS census tract level race data, I attempted to capture how the racial composition of NYC has changed in the past 15 years (2000 to 2015). In these maps, each dot = 50 people in a given census tract. The map on the left represents the year 2000, and the map on the right side represents the year 2015.

* Note: there may be some missing values since I merged census tract 2010 with 2000 data.