BRUSSELS, Sept. 8 (Xinhua) — Over 300 taxis from Belgium, France, Germany, Greece, Italy, Spain and Switzerland blocked the roads in Brussels on Thursday, with drivers demanding clarity on the Uber scandal and pledging to defend their interests from what they perceive as unfair competition from the private passenger transport company in the sector. The demonstration followed the "Uber Files" investigation in July, which exposed through leaked internal documents how the company circumvented regulations and approached lawmakers, as it expanded its services throughout Europe. European taxi associations are now calling for thorough investigations at both European and national levels into…