This document summarizes a graph visualization tool for analyzing Twitter data based on an Extract, Transform, Load (ETL) system. The tool uses Hadoop for distributed computation across Amazon EC2 instances and includes modules for crawling Twitter, extracting metadata, indexing data, and visualizing relationships between users as a graph. The tool is demonstrated by analyzing discussions around the Western Sahara conflict and a Basque political leader's social media campaign. Results identified key influencers and discussions. Future work may include expanding the tool to more social networks and enabling real-time and predictive analytics.