Over the past few weeks, Catalan leaders have been firmly committed to their promise of a declaration of independence if a "yes" vote wins at this Sunday's October 1 "referendum", despite the increasing logistical problems the vote is facing after Spain's Constitutional Court suspended regional referendum and secession laws passed at the beginning of September.

Prosecutors and police have acted in an ongoing series of operations to seize ballot papers and election materials, and to shut down website and mirrors promoting the vote.

The referendum and secession laws state that the Catal...