The names of the clubs already show the differences (poor/blue/liberal vs. rich/red/communist) altough this is outdated now. In the past CSKA fans were people from intelectual elite whereas Levski had a support among Sofia suburbs. Nowadays both clubs have supporters in all social groups. Levski is named after Bulgarian national hero and revolutioner Vasil Levski. CSKA was founded as the Central Sport Klub of the bulgarian Army while levski was ruled by the Ministries of Information and Industry. The derby of Sofia is not just the biggest derby in Bulgaria, many see this match as the biggest derby in the whole Balkan region.