Thousents protesters wave Catalonia independence flags as they take part at a rally against the National Court's decision to imprison civil society leaders, in Barcelona, Spain, Saturday, Oct. 21, 2017. The Spanish government moved decisively Saturday to use a previously untapped constitutional power so it can take control of Catalonia and derail the independence movement led by separatist politicians in the prosperous industrial region.(AP Photo/Emilio Morenatti)