Catalan protestors continue to clash with police in Barcelona, Spain. <br /><br />Police have estimated more than 500,000 people joined the rally on Friday (October 18). <br /><br />"A general strike was announced in Spain and five marches, all peaceful, converged on the Barcelona city centre, bringing the streets to a standstill", the filmer said. <br /><br />Protest riots broke out in Barcelona amid continuing anger over the jailing of Catalan separatist leaders.