https://www.reuters.com/article/us-uber-spain-strike/uber-cabify-drivers-strike-in-madrid-to-protest-against-planned-law-changes-idUSKCN1M71FM >Thousands of drivers for ride-hailing services Uber and Cabify, waving flags and chanting slogans such as "we want to work", marched down Madrid's central boulevard on Thursday ahead of plans by the government to tighten regulation.