I haven’t followed the campaigns too closely, so take this with an imperial pound of salt, but:
– From what I’ve seen a lot of the “Leave” campaign was driven by anti-immigrant sentiment. Which is both depressing in its own right and makes me worried that Trump might do better in November than we thought.
– The idea behind the European Union (and its antecedents the European Economic Community and European Community) was to forge closer ties in Europe after they started 2 world wars in 30 years. If the EU breaks up (which doesn’t seem terribly likely, but after yesterday who knows?) that seems like a pretty bad thing for global peace and stability.