Here are mass-shootings data visualization between 1996-2012 in US. The stats are based on news papers and data visualization is done using Platfora.
Graph 1: Mass shootings in USA between 1996-2012
Graph 2: Month with maximum numbers of mass shootings
Graph 3: School or Place Name and Causality Count
Graph 4: Month with maximum numbers of mass shootings
Graph 5: Mass shootings in particular month
Keywords: Hadoop, Big Data, Data Visualization, Platfora, HadoopBI, BigDataBI