One side is as bad as the other...
As I said in another thread: This seems to me to be a “no good guys involved” situation.
Barcelona/Catalonia was a key center for the Communists in the Spanish Civil War, FWIW. There would seem to be echos of that in today’s Catalonia, based on some reports.
Gen.Blather has commented, “I think the Catalonia thing would be an excellent opportunity to ignore world events until they sort themselves out.”
I strongly concur. This is not a situation that cries out for US involvement/leadership.