This seems like an iconic example of what NOT to do when faced with an independence referendum. Compare the situation in Scotland or Canada, where AIUI the central government grudgingly permitted the referendum, campaigned on the issue locally, and offered symbolic concessions to local autonomy while focusing heavily on the pragmatic risks and costs of independence. In Catalonia by contrast we have plenty of images of the police violently disrupting the referendum and independence protesters, then pledging to end local autonomy altogether.