Today I shorted it, page-106

Not sure what you mean about most. The southern countries (Italy, Portugal, Greece etc) have problems with the fact that they cannot exercise monetary policy specific to their country's needs (since there is one European central bank). But this has nothing to do with tariffs and free trade.
Brexit voters voted to stop the close the borders and stop immigration policy, again nothing to do with tariffs and free trade (of goods and services).