City Hall will be retaliating against taxi drivers. About 1,200 taxis participated in a 15 kilometer per hour drive to the Václav Havel Airport Prague on Monday in a protest that stalled traffic. The drivers are complaining about competition from Uber, an app-based car service. Monday’s protest has angered both politicians and the public. City Hall on Wednesday will start a series of inspections of taxis to look for overcharging and other violations.