Spain riot police clashed with pro-independence Catalan protesters in Barcelona on while some activists burned tires and blocked highways across northeast of the country as part of a day of protests against the trial of 12 politicians. Pro-independence leaders organise mass strike in #Catalonia https://t.co/lIFuBFsggM — Janne Riitakorpi (@JanneRiitakorpi) February 21, 2019 A total of…